202120202112 has 64 divisors (see below), whose sum is σ = 536938934400. Its totient is φ = 67366229504.

The previous prime is 202120202111. The next prime is 202120202143. The reversal of 202120202112 is 211202021202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×202120202112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202120202091 and 202120202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120202111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4562533 + ... + 4606619.

It is an arithmetic number, because the mean of its divisors is an integer number (8389670850).

Almost surely, 2^202120202112 is an apocalyptic number.

It is an amenable number.

202120202112 is an abundant number, since it is smaller than the sum of its proper divisors (334818732288).

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

202120202112 is a wasteful number, since it uses less digits than its factorization.

202120202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56043 (or 56031 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202120202112 its reverse (211202021202), we get a palindrome (413322223314).

The spelling of 202120202112 in words is "two hundred two billion, one hundred twenty million, two hundred two thousand, one hundred twelve".