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203221132012 = 221721072636247
BaseRepresentation
bin1011110101000011101…
…1000110001011101100
3201102112211102010221001
42331100323012023230
511312144102211022
6233205234050044
720453003056303
oct2752073061354
9642484363831
10203221132012
1179205038378
1233476419924
1316218779452
149b9bc0b43a
155446148b27
hex2f50ec62ec

203221132012 has 72 divisors (see below), whose sum is σ = 382829255424. Its totient is φ = 94364368128.

The previous prime is 203221132003. The next prime is 203221132111. The reversal of 203221132012 is 210231122302.

It is a super-3 number, since 3×2032211320123 (a number of 35 digits) contains 333 as substring.

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, 32527873 + ... + 32534119.

It is an arithmetic number, because the mean of its divisors is an integer number (5317072992).

Almost surely, 2203221132012 is an apocalyptic number.

It is an amenable number.

203221132012 is a deficient number, since it is larger than the sum of its proper divisors (179608123412).

203221132012 is a wasteful number, since it uses less digits than its factorization.

203221132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655 (or 6636 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 203221132012 its reverse (210231122302), we get a palindrome (413452254314).

The spelling of 203221132012 in words is "two hundred three billion, two hundred twenty-one million, one hundred thirty-two thousand, twelve".

Divisors: 1 2 4 17 34 68 107 214 263 289 428 526 578 1052 1156 1819 3638 4471 6247 7276 8942 12494 17884 24988 28141 30923 56282 61846 76007 106199 112564 123692 152014 212398 304028 424796 478397 668429 956794 1336858 1642961 1805383 1913588 2673716 3285922 3610766 6571844 7221532 8132749 11363293 16265498 22726586 27930337 32530996 45453172 55860674 111721348 175796827 193175981 351593654 386351962 474815729 703187308 772703924 949631458 1899262916 2988546059 5977092118 11954184236 50805283003 101610566006 203221132012