221010212220212 has 48 divisors (see below), whose sum is σ = 411363374349312. Its totient is φ = 103536391825920.

The previous prime is 221010212220169. The next prime is 221010212220223. The reversal of 221010212220212 is 212022212010122.

It is a congruent 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, 1012709618 + ... + 1012927830.

It is an arithmetic number, because the mean of its divisors is an integer number (8570070298944).

Almost surely, 2^{221010212220212} is an apocalyptic number.

It is an amenable number.

221010212220212 is a deficient number, since it is larger than the sum of its proper divisors (190353162129100).

221010212220212 is a wasteful number, since it uses less digits than its factorization.

221010212220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285248 (or 285246 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221010212220212 its reverse (212022212010122), we get a palindrome (433032424230334).

The spelling of 221010212220212 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, two hundred twenty thousand, two hundred twelve".