202121120112 has 80 divisors (see below), whose sum is σ = 544262462592. Its totient is φ = 64574357760.

The previous prime is 202121120111. The next prime is 202121120119. The reversal of 202121120112 is 211021121202.

It is a junction number, because it is equal to n+sod(n) for n = 202121120091 and 202121120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121120111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730314 + ... + 968297.

Almost surely, 2^202121120112 is an apocalyptic number.

It is an amenable number.

202121120112 is an abundant number, since it is smaller than the sum of its proper divisors (342141342480).

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

202121120112 is a wasteful number, since it uses less digits than its factorization.

202121120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698726 (or 1698720 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202121120112 its reverse (211021121202), we get a palindrome (413142241314).

The spelling of 202121120112 in words is "two hundred two billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twelve".