202122112 has 64 divisors (see below), whose sum is σ = 441190800. Its totient is φ = 91807744.

The previous prime is 202122073. The next prime is 202122113. The reversal of 202122112 is 211221202.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 202122092 and 202122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122113) 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, 61503 + ... + 64705.

Almost surely, 2^202122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220595400).

202122112 is an abundant number, since it is smaller than the sum of its proper divisors (239068688).

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

202122112 is a wasteful number, since it uses less digits than its factorization.

202122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263 (or 3251 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 202122112 is about 14216.9656396856. The cubic root of 202122112 is about 586.8646393384.

Adding to 202122112 its reverse (211221202), we get a palindrome (413343314).

The spelling of 202122112 in words is "two hundred two million, one hundred twenty-two thousand, one hundred twelve".