22111122202020 has 144 divisors (see below), whose sum is σ = 67926188733312. Its totient is φ = 5821411368960.

The previous prime is 22111122202003. The next prime is 22111122202051. The reversal of 22111122202020 is 2020222111122.

It is a happy number.

22111122202020 is a `hidden beast` number, since 221 + 11 + 12 + 220 + 202 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22111122201984 and 22111122202002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4335204 + ... + 7938276.

Almost surely, 2^{22111122202020} is an apocalyptic number.

22111122202020 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 22111122202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33963094366656).

22111122202020 is an abundant number, since it is smaller than the sum of its proper divisors (45815066531292).

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

22111122202020 is a wasteful number, since it uses less digits than its factorization.

22111122202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603522 (or 3603517 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22111122202020 its reverse (2020222111122), we get a palindrome (24131344313142).

The spelling of 22111122202020 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred two thousand, twenty".