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3211020030020 = 2251123391391291
BaseRepresentation
bin101110101110011111101…
…101010101000001000100
3102100222012111200111012112
4232232133231111001010
5410102132111430040
610455042223040152
7450663032626355
oct56563755250104
912328174614175
103211020030020
111028871106600
1243a398140058
131a3a4ac6a6aa
14b15b27bdd2c
15587d53b2365
hex2eb9fb55044

3211020030020 has 72 divisors (see below), whose sum is σ = 7414088123904. Its totient is φ = 1167296328000.

The previous prime is 3211020029993. The next prime is 3211020030041. The reversal of 3211020030020 is 200300201123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3211020029977 and 3211020030004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8010575 + ... + 8401865.

Almost surely, 23211020030020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3211020030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3707044061952).

3211020030020 is an abundant number, since it is smaller than the sum of its proper divisors (4203068093884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3211020030020 is a wasteful number, since it uses less digits than its factorization.

3211020030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394713 (or 394700 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 3211020030020 its reverse (200300201123), we get a palindrome (3411320231143).

The spelling of 3211020030020 in words is "three trillion, two hundred eleven billion, twenty million, thirty thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 484 605 1210 2420 3391 6782 13564 16955 33910 37301 67820 74602 149204 186505 373010 391291 410311 746020 782582 820622 1565164 1641244 1956455 2051555 3912910 4103110 4304201 7825820 8206220 8608402 17216804 21521005 43042010 47346211 86084020 94692422 189384844 236731055 473462110 946924220 1326867781 2653735562 5307471124 6634338905 13268677810 14595545591 26537355620 29191091182 58382182364 72977727955 145955455910 160551001501 291910911820 321102003002 642204006004 802755007505 1605510015010 3211020030020