212122202012 has 12 divisors (see below), whose sum is σ = 424244404080. Its totient is φ = 90909515136.

The previous prime is 212122201957. The next prime is 212122202021. The reversal of 212122202012 is 210202221212.

It is a happy number.

212122202012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787896437 + ... + 3787896492.

It is an arithmetic number, because the mean of its divisors is an integer number (35353700340).

Almost surely, 2^212122202012 is an apocalyptic number.

It is an amenable number.

212122202012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212122202012 is a wasteful number, since it uses less digits than its factorization.

212122202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575792940 (or 7575792938 counting only the distinct ones).

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

Adding to 212122202012 its reverse (210202221212), we get a palindrome (422324423224).

The spelling of 212122202012 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, twelve".