202021202112112 has 20 divisors (see below), whose sum is σ = 391427974004040. Its totient is φ = 101007531401408.

The previous prime is 202021202112101. The next prime is 202021202112151. The reversal of 202021202112112 is 211211202120202.

It is a super-2 number, since 2×202021202112112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202021202112112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191310418 + ... + 192363505.

It is an arithmetic number, because the mean of its divisors is an integer number (19571398700202).

Almost surely, 2^{202021202112112} is an apocalyptic number.

It is an amenable number.

202021202112112 is a deficient number, since it is larger than the sum of its proper divisors (189406771891928).

202021202112112 is a wasteful number, since it uses less digits than its factorization.

202021202112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383706840 (or 383706834 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202021202112112 its reverse (211211202120202), we get a palindrome (413232404232314).

The spelling of 202021202112112 in words is "two hundred two trillion, twenty-one billion, two hundred two million, one hundred twelve thousand, one hundred twelve".