22111100001020 has 48 divisors (see below), whose sum is σ = 46459902770400. Its totient is φ = 8839375776000.

The previous prime is 22111100000987. The next prime is 22111100001041. The reversal of 22111100001020 is 2010000111122.

It is a junction number, because it is equal to n+sod(n) for n = 22111100000992 and 22111100001010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398363270 + ... + 398418770.

It is an arithmetic number, because the mean of its divisors is an integer number (967914641050).

Almost surely, 2^{22111100001020} is an apocalyptic number.

22111100001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111100001020 is an abundant number, since it is smaller than the sum of its proper divisors (24348802769380).

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

22111100001020 is a wasteful number, since it uses less digits than its factorization.

22111100001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66558 (or 66556 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111100001020 its reverse (2010000111122), we get a palindrome (24121100112142).

The spelling of 22111100001020 in words is "twenty-two trillion, one hundred eleven billion, one hundred million, one thousand, twenty".