202112221211012 has 72 divisors (see below), whose sum is σ = 417589244347968. Its totient is φ = 85327577428800.

The previous prime is 202112221210981. The next prime is 202112221211027. The reversal of 202112221211012 is 210112122211202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10400462 + ... + 22636122.

It is an arithmetic number, because the mean of its divisors is an integer number (5799850615944).

Almost surely, 2^{202112221211012} 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 202112221211012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208794622173984).

202112221211012 is an abundant number, since it is smaller than the sum of its proper divisors (215477023136956).

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

202112221211012 is a wasteful number, since it uses less digits than its factorization.

202112221211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236937 (or 12236928 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202112221211012 its reverse (210112122211202), we get a palindrome (412224343422214).

The spelling of 202112221211012 in words is "two hundred two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, twelve".