22220020121100 has 72 divisors (see below), whose sum is σ = 64332814728000. Its totient is φ = 5921385718080.

The previous prime is 22220020121081. The next prime is 22220020121113. The reversal of 22220020121100 is 112102002222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22220020121100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24255682 + ... + 25155081.

Almost surely, 2^{22220020121100} is an apocalyptic number.

22220020121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220020121100 is an abundant number, since it is smaller than the sum of its proper divisors (42112794606900).

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

22220020121100 is a wasteful number, since it uses less digits than its factorization.

22220020121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49412279 (or 49412272 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22220020121100 its reverse (112102002222), we get a palindrome (22332122123322).

The spelling of 22220020121100 in words is "twenty-two trillion, two hundred twenty billion, twenty million, one hundred twenty-one thousand, one hundred".