22222020112020 has 72 divisors (see below), whose sum is σ = 68678620677576. Its totient is φ = 5814063121152.

The previous prime is 22222020111881. The next prime is 22222020112021. The reversal of 22222020112020 is 2021102022222.

22222020112020 is a `hidden beast` number, since 222 + 220 + 20 + 1 + 1 + 202 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 897407603856 + 21324612508164 = 947316^2 + 4617858^2 .

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 = 22222020111984 and 22222020112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222020112021) 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, 1164666567 + ... + 1164685646.

It is an arithmetic number, because the mean of its divisors is an integer number (953869731633).

Almost surely, 2^{22222020112020} is an apocalyptic number.

22222020112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222020112020 is an abundant number, since it is smaller than the sum of its proper divisors (46456600565556).

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

22222020112020 is a wasteful number, since it uses less digits than its factorization.

22222020112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329352281 (or 2329352276 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22222020112020 its reverse (2021102022222), we get a palindrome (24243122134242).

The spelling of 22222020112020 in words is "twenty-two trillion, two hundred twenty-two billion, twenty million, one hundred twelve thousand, twenty".