22112220222020 has 24 divisors (see below), whose sum is σ = 46438858264344. Its totient is φ = 8844279365376.

The previous prime is 22112220222019. The next prime is 22112220222077. The reversal of 22112220222020 is 2022202221122.

It can be written as a sum of positive squares in 4 ways, for example, as 4880555803204 + 17231664418816 = 2209198^2 + 4151104^2 .

It is a super-2 number, since 2×22112220222020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22112220221983 and 22112220222001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37747289 + ... + 38328608.

It is an arithmetic number, because the mean of its divisors is an integer number (1934952427681).

Almost surely, 2^{22112220222020} is an apocalyptic number.

22112220222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112220222020 is an abundant number, since it is smaller than the sum of its proper divisors (24326638042324).

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

22112220222020 is a wasteful number, since it uses less digits than its factorization.

22112220222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76090439 (or 76090437 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22112220222020 its reverse (2022202221122), we get a palindrome (24134422443142).

The spelling of 22112220222020 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, twenty".