22021120020020 has 48 divisors (see below), whose sum is σ = 50448714817536. Its totient is φ = 8007627504000.

The previous prime is 22021120019999. The next prime is 22021120020023. The reversal of 22021120020020 is 2002002112022.

It is a super-2 number, since 2×22021120020020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22021120019977 and 22021120020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021120020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52825805 + ... + 53241035.

It is an arithmetic number, because the mean of its divisors is an integer number (1051014892032).

Almost surely, 2^{22021120020020} is an apocalyptic number.

22021120020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021120020020 is an abundant number, since it is smaller than the sum of its proper divisors (28427594797516).

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

22021120020020 is a wasteful number, since it uses less digits than its factorization.

22021120020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656312 (or 656310 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22021120020020 its reverse (2002002112022), we get a palindrome (24023122132042).

The spelling of 22021120020020 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, twenty thousand, twenty".