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13120001211 = 3131110930103
BaseRepresentation
bin11000011100000001…
…10101010010111011
31020212100121010011210
430032000311102323
5203332210014321
610005515054203
7643061112252
oct141600652273
936770533153
1013120001211
115622998109
122661a41363
1313111c9335
148c6685799
1551bc57b76
hex30e0354bb

13120001211 has 16 divisors (see below), whose sum is σ = 17643352320. Its totient is φ = 8671784160.

The previous prime is 13120001203. The next prime is 13120001221. The reversal of 13120001211 is 11210002131.

It is not a de Polignac number, because 13120001211 - 23 = 13120001203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13120001221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420786 + ... + 450888.

It is an arithmetic number, because the mean of its divisors is an integer number (1102709520).

Almost surely, 213120001211 is an apocalyptic number.

13120001211 is a deficient number, since it is larger than the sum of its proper divisors (4523351109).

13120001211 is a wasteful number, since it uses less digits than its factorization.

13120001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31346.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 13120001211 its reverse (11210002131), we get a palindrome (24330003342).

The spelling of 13120001211 in words is "thirteen billion, one hundred twenty million, one thousand, two hundred eleven".

Divisors: 1 3 131 393 1109 3327 30103 90309 145279 435837 3943493 11830479 33384227 100152681 4373333737 13120001211