12021312102 has 32 divisors (see below), whose sum is σ = 25466337792. Its totient is φ = 3769993344.

The previous prime is 12021312041. The next prime is 12021312113. The reversal of 12021312102 is 20121312021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274063 + ... + 314885.

It is an arithmetic number, because the mean of its divisors is an integer number (795823056).

Almost surely, 2^12021312102 is an apocalyptic number.

12021312102 is an abundant number, since it is smaller than the sum of its proper divisors (13445025690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021312102 is a wasteful number, since it uses less digits than its factorization.

12021312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43732.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021312102 its reverse (20121312021), we get a palindrome (32142624123).

The spelling of 12021312102 in words is "twelve billion, twenty-one million, three hundred twelve thousand, one hundred two".