20212221101112 has 96 divisors (see below), whose sum is σ = 56288918228400. Its totient is φ = 6547387617792.

The previous prime is 20212221101047. The next prime is 20212221101113. The reversal of 20212221101112 is 21110112221202.

20212221101112 is a `hidden beast` number, since 20 + 212 + 221 + 101 + 112 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212221101113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2384037 + ... + 6790292.

Almost surely, 2^{20212221101112} is an apocalyptic number.

It is an amenable number.

20212221101112 is an abundant number, since it is smaller than the sum of its proper divisors (36076697127288).

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

20212221101112 is a wasteful number, since it uses less digits than its factorization.

20212221101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175205 (or 9175198 counting only the distinct ones).

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

Adding to 20212221101112 its reverse (21110112221202), we get a palindrome (41322333322314).

The spelling of 20212221101112 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, one hundred one thousand, one hundred twelve".