22021102122020 has 12 divisors (see below), whose sum is σ = 46244314456284. Its totient is φ = 8808440848800.

The previous prime is 22021102122013. The next prime is 22021102122023. The reversal of 22021102122020 is 2022120112022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12893887729636 + 9127214392384 = 3590806^2 + 3021128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22021102122020.

It is not an unprimeable number, because it can be changed into a prime (22021102122023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550527553031 + ... + 550527553070.

It is an arithmetic number, because the mean of its divisors is an integer number (3853692871357).

Almost surely, 2^{22021102122020} is an apocalyptic number.

22021102122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021102122020 is an abundant number, since it is smaller than the sum of its proper divisors (24223212334264).

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

22021102122020 is a wasteful number, since it uses less digits than its factorization.

22021102122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101055106110 (or 1101055106108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22021102122020 its reverse (2022120112022), we get a palindrome (24043222234042).

The spelling of 22021102122020 in words is "twenty-two trillion, twenty-one billion, one hundred two million, one hundred twenty-two thousand, twenty".