22101021100020 has 48 divisors (see below), whose sum is σ = 61913209034880. Its totient is φ = 5890715154816.

The previous prime is 22101021100009. The next prime is 22101021100051. The reversal of 22101021100020 is 2000112010122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22101021099969 and 22101021100005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90203887 + ... + 90448566.

It is an arithmetic number, because the mean of its divisors is an integer number (1289858521560).

Almost surely, 2^{22101021100020} is an apocalyptic number.

22101021100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101021100020 is an abundant number, since it is smaller than the sum of its proper divisors (39812187934860).

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

22101021100020 is a wasteful number, since it uses less digits than its factorization.

22101021100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180654504 (or 180654502 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101021100020 its reverse (2000112010122), we get a palindrome (24101133110142).

The spelling of 22101021100020 in words is "twenty-two trillion, one hundred one billion, twenty-one million, one hundred thousand, twenty".