22020121312 has 48 divisors (see below), whose sum is σ = 51253745760. Its totient is φ = 9111771648.

The previous prime is 22020121297. The next prime is 22020121351. The reversal of 22020121312 is 21312102022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 1688403 + ... + 1701394.

It is an arithmetic number, because the mean of its divisors is an integer number (1067786370).

Almost surely, 2^22020121312 is an apocalyptic number.

It is an amenable number.

22020121312 is an abundant number, since it is smaller than the sum of its proper divisors (29233624448).

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

22020121312 is a wasteful number, since it uses less digits than its factorization.

22020121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389843 (or 3389835 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22020121312 its reverse (21312102022), we get a palindrome (43332223334).

The spelling of 22020121312 in words is "twenty-two billion, twenty million, one hundred twenty-one thousand, three hundred twelve".