22021022120020 has 96 divisors (see below), whose sum is σ = 57772465422336. Its totient is φ = 6849715958400.

The previous prime is 22021022119991. The next prime is 22021022120023. The reversal of 22021022120020 is 2002122012022.

It is a junction number, because it is equal to n+sod(n) for n = 22021022119976 and 22021022120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021022120023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13805332 + ... + 15317611.

It is an arithmetic number, because the mean of its divisors is an integer number (601796514816).

Almost surely, 2^{22021022120020} is an apocalyptic number.

22021022120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021022120020 is an abundant number, since it is smaller than the sum of its proper divisors (35751443302316).

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

22021022120020 is a wasteful number, since it uses less digits than its factorization.

22021022120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29123461 (or 29123459 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22021022120020 its reverse (2002122012022), we get a palindrome (24023144132042).

The spelling of 22021022120020 in words is "twenty-two trillion, twenty-one billion, twenty-two million, one hundred twenty thousand, twenty".