22021112202120 has 96 divisors (see below), whose sum is σ = 72024465890520. Its totient is φ = 5834893409280.

The previous prime is 22021112202071. The next prime is 22021112202137. The reversal of 22021112202120 is 2120221112022.

It is a happy number.

22021112202120 is a `hidden beast` number, since 2 + 20 + 211 + 1 + 220 + 212 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20961764873604 + 1059347328516 = 4578402^2 + 1029246^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22021112202093 and 22021112202102.

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, 194751621 + ... + 194864660.

Almost surely, 2^{22021112202120} is an apocalyptic number.

22021112202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021112202120 is an abundant number, since it is smaller than the sum of its proper divisors (50003353688400).

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

22021112202120 is a wasteful number, since it uses less digits than its factorization.

22021112202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389616455 (or 389616448 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22021112202120 its reverse (2120221112022), we get a palindrome (24141333314142).

The spelling of 22021112202120 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred twenty".