221010212122112 has 120 divisors (see below), whose sum is σ = 523377059208696. Its totient is φ = 92931517206528.

The previous prime is 221010212122099. The next prime is 221010212122151. The reversal of 221010212122112 is 211221212010122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81777878 + ... + 84437205.

Almost surely, 2^{221010212122112} is an apocalyptic number.

It is an amenable number.

221010212122112 is an abundant number, since it is smaller than the sum of its proper divisors (302366847086584).

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

221010212122112 is an equidigital number, since it uses as much as digits as its factorization.

221010212122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166215168 (or 166215145 counting only the distinct ones).

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

Adding to 221010212122112 its reverse (211221212010122), we get a palindrome (432231424132234).

The spelling of 221010212122112 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twelve".