22121012022020 has 24 divisors (see below), whose sum is σ = 46499713243200. Its totient is φ = 8839721380832.

The previous prime is 22121012022007. The next prime is 22121012022059. The reversal of 22121012022020 is 2022021012122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121012022020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542693360 + ... + 542734119.

It is an arithmetic number, because the mean of its divisors is an integer number (1937488051800).

Almost surely, 2^{22121012022020} is an apocalyptic number.

22121012022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121012022020 is an abundant number, since it is smaller than the sum of its proper divisors (24378701221180).

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

22121012022020 is a wasteful number, since it uses less digits than its factorization.

22121012022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085428507 (or 1085428505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22121012022020 its reverse (2022021012122), we get a palindrome (24143033034142).

The spelling of 22121012022020 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, twenty-two thousand, twenty".