22112200122020 has 96 divisors (see below), whose sum is σ = 49295657980800. Its totient is φ = 8317240694784.

The previous prime is 22112200122017. The next prime is 22112200122041. The reversal of 22112200122020 is 2022100221122.

It is a happy number.

It is a super-2 number, since 2×22112200122020² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22112200122020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7376636 + ... + 9931724.

It is an arithmetic number, because the mean of its divisors is an integer number (513496437300).

Almost surely, 2^{22112200122020} is an apocalyptic number.

22112200122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112200122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24647828990400).

22112200122020 is an abundant number, since it is smaller than the sum of its proper divisors (27183457858780).

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

22112200122020 is a wasteful number, since it uses less digits than its factorization.

22112200122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555517 (or 2555515 counting only the distinct ones).

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

Adding to 22112200122020 its reverse (2022100221122), we get a palindrome (24134300343142).

The spelling of 22112200122020 in words is "twenty-two trillion, one hundred twelve billion, two hundred million, one hundred twenty-two thousand, twenty".