202122212012 has 48 divisors (see below), whose sum is σ = 413160050688. Its totient is φ = 84716124480.

The previous prime is 202122211961. The next prime is 202122212069. The reversal of 202122212012 is 210212221202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1688462 + ... + 1804202.

It is an arithmetic number, because the mean of its divisors is an integer number (8607501056).

Almost surely, 2^202122212012 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 202122212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206580025344).

202122212012 is an abundant number, since it is smaller than the sum of its proper divisors (211037838676).

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

202122212012 is a wasteful number, since it uses less digits than its factorization.

202122212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117126 (or 117124 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202122212012 its reverse (210212221202), we get a palindrome (412334433214).

The spelling of 202122212012 in words is "two hundred two billion, one hundred twenty-two million, two hundred twelve thousand, twelve".