20221220112100 has 36 divisors (see below), whose sum is σ = 50148625879744. Its totient is φ = 6932989752480.

The previous prime is 20221220112047. The next prime is 20221220112103. The reversal of 20221220112100 is 121102212202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20221220112103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14443727952 + ... + 14443729351.

Almost surely, 2^{20221220112100} is an apocalyptic number.

20221220112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221220112100 is an abundant number, since it is smaller than the sum of its proper divisors (29927405767644).

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

20221220112100 is a wasteful number, since it uses less digits than its factorization.

20221220112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28887457324 (or 28887457317 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20221220112100 its reverse (121102212202), we get a palindrome (20342322324302).

The spelling of 20221220112100 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, one hundred".