12102120331 has 16 divisors (see below), whose sum is σ = 13955733504. Its totient is φ = 10280058624.

The previous prime is 12102120311. The next prime is 12102120341. The reversal of 12102120331 is 13302120121.

It is a cyclic number.

It is not a de Polignac number, because 12102120331 - 2⁷ = 12102120203 is a prime.

It is a super-2 number, since 2×12102120331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102120301) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 387750 + ... + 417796.

It is an arithmetic number, because the mean of its divisors is an integer number (872233344).

Almost surely, 2^12102120331 is an apocalyptic number.

12102120331 is a deficient number, since it is larger than the sum of its proper divisors (1853613173).

12102120331 is a wasteful number, since it uses less digits than its factorization.

12102120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30570.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12102120331 its reverse (13302120121), we get a palindrome (25404240452).

The spelling of 12102120331 in words is "twelve billion, one hundred two million, one hundred twenty thousand, three hundred thirty-one".