20221121121100 has 18 divisors (see below), whose sum is σ = 43879832833004. Its totient is φ = 8088448448400.

The previous prime is 20221121121077. The next prime is 20221121121181. The reversal of 20221121121100 is 112112112202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101105605506 + ... + 101105605705.

Almost surely, 2^{20221121121100} is an apocalyptic number.

20221121121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221121121100 is an abundant number, since it is smaller than the sum of its proper divisors (23658711711904).

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

20221121121100 is a wasteful number, since it uses less digits than its factorization.

20221121121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202211211225 (or 202211211218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20221121121100 its reverse (112112112202), we get a palindrome (20333233233302).

The spelling of 20221121121100 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred".