12129861334502 has 16 divisors (see below), whose sum is σ = 18425245271040. Its totient is φ = 5988114073032.

The previous prime is 12129861334501. The next prime is 12129861334537. The reversal of 12129861334502 is 20543316892121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129861334501) 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, 31913993 + ... + 32291835.

It is an arithmetic number, because the mean of its divisors is an integer number (1151577829440).

Almost surely, 2^{12129861334502} is an apocalyptic number.

12129861334502 is a deficient number, since it is larger than the sum of its proper divisors (6295383936538).

12129861334502 is a wasteful number, since it uses less digits than its factorization.

12129861334502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581107.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 12129861334502 in words is "twelve trillion, one hundred twenty-nine billion, eight hundred sixty-one million, three hundred thirty-four thousand, five hundred two".