12021881874 has 32 divisors (see below), whose sum is σ = 25463548800. Its totient is φ = 3770764032.

The previous prime is 12021881803. The next prime is 12021881903. The reversal of 12021881874 is 47818812021.

It is a Curzon 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, 622792 + ... + 641804.

It is an arithmetic number, because the mean of its divisors is an integer number (795735900).

Almost surely, 2^12021881874 is an apocalyptic number.

12021881874 is an abundant number, since it is smaller than the sum of its proper divisors (13441666926).

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

12021881874 is a wasteful number, since it uses less digits than its factorization.

12021881874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25234.

The product of its (nonzero) digits is 57344, while the sum is 42.

The spelling of 12021881874 in words is "twelve billion, twenty-one million, eight hundred eighty-one thousand, eight hundred seventy-four".