22222020012020 has 48 divisors (see below), whose sum is σ = 47938767701328. Its totient is φ = 8646535203840.

The previous prime is 22222020012001. The next prime is 22222020012041. The reversal of 22222020012020 is 2021002022222.

It can be written as a sum of positive squares in 8 ways, for example, as 130553587684 + 22091466424336 = 361322^2 + 4700156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22222020012020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383201 + ... + 6677640.

It is an arithmetic number, because the mean of its divisors is an integer number (998724327111).

Almost surely, 2^{22222020012020} is an apocalyptic number.

22222020012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222020012020 is an abundant number, since it is smaller than the sum of its proper divisors (25716747689308).

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

22222020012020 is a wasteful number, since it uses less digits than its factorization.

22222020012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065140 (or 7065138 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22222020012020 its reverse (2021002022222), we get a palindrome (24243022034242).

The spelling of 22222020012020 in words is "twenty-two trillion, two hundred twenty-two billion, twenty million, twelve thousand, twenty".