129112210931 has 8 divisors (see below), whose sum is σ = 140852952000. Its totient is φ = 117372014440.

The previous prime is 129112210921. The next prime is 129112210979. The reversal of 129112210931 is 139012211921.

It is a happy number.

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 129112210931 - 2³⁴ = 111932341747 is a prime.

It is a super-2 number, since 2×129112210931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129112210921) 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, 481400 + ... + 699978.

It is an arithmetic number, because the mean of its divisors is an integer number (17606619000).

Almost surely, 2^129112210931 is an apocalyptic number.

129112210931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129112210931 is a deficient number, since it is larger than the sum of its proper divisors (11740741069).

129112210931 is a wasteful number, since it uses less digits than its factorization.

129112210931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272289.

The product of its (nonzero) digits is 1944, while the sum is 32.

It can be divided in two parts, 129112 and 210931, that added together give a palindrome (340043).

The spelling of 129112210931 in words is "one hundred twenty-nine billion, one hundred twelve million, two hundred ten thousand, nine hundred thirty-one".