202123013112 has 48 divisors (see below), whose sum is σ = 547531169640. Its totient is φ = 67360223808.

The previous prime is 202123013111. The next prime is 202123013173. The reversal of 202123013112 is 211310321202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202123013111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54903 + ... + 638169.

Almost surely, 2^202123013112 is an apocalyptic number.

It is an amenable number.

202123013112 is an abundant number, since it is smaller than the sum of its proper divisors (345408156528).

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

202123013112 is a wasteful number, since it uses less digits than its factorization.

202123013112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588092 (or 588085 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 202123013112 its reverse (211310321202), we get a palindrome (413433334314).

The spelling of 202123013112 in words is "two hundred two billion, one hundred twenty-three million, thirteen thousand, one hundred twelve".