211211034129 has 6 divisors (see below), whose sum is σ = 305082604866. Its totient is φ = 140807356080.

The previous prime is 211211034121. The next prime is 211211034157. The reversal of 211211034129 is 921430112112.

211211034129 is a `hidden beast` number, since 21 + 121 + 103 + 412 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162909104400 + 48301929729 = 403620^2 + 219777^2 .

It is not a de Polignac number, because 211211034129 - 2³ = 211211034121 is a prime.

It is a super-2 number, since 2×211211034129² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211211034121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11733946332 + ... + 11733946349.

It is an arithmetic number, because the mean of its divisors is an integer number (50847100811).

Almost surely, 2^211211034129 is an apocalyptic number.

It is an amenable number.

211211034129 is a deficient number, since it is larger than the sum of its proper divisors (93871570737).

211211034129 is a wasteful number, since it uses less digits than its factorization.

211211034129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23467892687 (or 23467892684 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 211211034129 in words is "two hundred eleven billion, two hundred eleven million, thirty-four thousand, one hundred twenty-nine".