221010212122110 has 96 divisors (see below), whose sum is σ = 605678017063392. Its totient is φ = 57969891665280.

The previous prime is 221010212122099. The next prime is 221010212122151. The reversal of 221010212122110 is 11221212010122.

221010212122110 is a `hidden beast` number, since 2 + 210 + 10 + 21 + 212 + 211 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 745349349 + ... + 745645808.

It is an arithmetic number, because the mean of its divisors is an integer number (6309146011077).

Almost surely, 2^{221010212122110} is an apocalyptic number.

221010212122110 is an abundant number, since it is smaller than the sum of its proper divisors (384667804941282).

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

221010212122110 is a wasteful number, since it uses less digits than its factorization.

221010212122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490995240 (or 1490995228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221010212122110 its reverse (11221212010122), we get a palindrome (232231424132232).

The spelling of 221010212122110 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, one hundred twenty-two thousand, one hundred ten".