212121109443832 has 64 divisors (see below), whose sum is σ = 414475469475840. Its totient is φ = 101660002992000.

The previous prime is 212121109443829. The next prime is 212121109443853. The reversal of 212121109443832 is 238344901121212.

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, 134576593 + ... + 136143679.

It is an arithmetic number, because the mean of its divisors is an integer number (6476179210560).

Almost surely, 2^{212121109443832} is an apocalyptic number.

It is an amenable number.

212121109443832 is a deficient number, since it is larger than the sum of its proper divisors (202354360032008).

212121109443832 is a wasteful number, since it uses less digits than its factorization.

212121109443832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572332 (or 1572328 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 212121109443832 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred nine million, four hundred forty-three thousand, eight hundred thirty-two".