129231046012 has 24 divisors (see below), whose sum is σ = 245297959200. Its totient is φ = 59331325440.

The previous prime is 129231045997. The next prime is 129231046027. The reversal of 129231046012 is 210640132921.

It is an interprime number because it is at equal distance from previous prime (129231045997) and next prime (129231046027).

It is a super-2 number, since 2×129231046012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23173512 + ... + 23179087.

It is an arithmetic number, because the mean of its divisors is an integer number (10220748300).

Almost surely, 2^129231046012 is an apocalyptic number.

It is an amenable number.

129231046012 is a deficient number, since it is larger than the sum of its proper divisors (116066913188).

129231046012 is a wasteful number, since it uses less digits than its factorization.

129231046012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46352661 (or 46352659 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 129231046012 its reverse (210640132921), we get a palindrome (339871178933).

The spelling of 129231046012 in words is "one hundred twenty-nine billion, two hundred thirty-one million, forty-six thousand, twelve".