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210221012101 = 3129323144447
BaseRepresentation
bin1100001111001000100…
…1100001010010000101
3202002121122220220020011
43003302021201102011
511421013034341401
6240324005510221
721121321056052
oct3036211412205
9662548826204
10210221012101
118117730a941
12348aa712371
1316a92a3c929
14a263736029
15570593c451
hex30f2261485

210221012101 has 8 divisors (see below), whose sum is σ = 217742966784. Its totient is φ = 202745346960.

The previous prime is 210221012087. The next prime is 210221012129. The reversal of 210221012101 is 101210122012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210221012101 - 29 = 210221011589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221018101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11563141 + ... + 11581306.

It is an arithmetic number, because the mean of its divisors is an integer number (27217870848).

Almost surely, 2210221012101 is an apocalyptic number.

It is an amenable number.

210221012101 is a deficient number, since it is larger than the sum of its proper divisors (7521954683).

210221012101 is a wasteful number, since it uses less digits than its factorization.

210221012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23144771.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210221012101 its reverse (101210122012), we get a palindrome (311431134113).

The spelling of 210221012101 in words is "two hundred ten billion, two hundred twenty-one million, twelve thousand, one hundred one".

Divisors: 1 31 293 9083 23144447 717477857 6781322971 210221012101