22100122222220 has 48 divisors (see below), whose sum is σ = 53040633719808. Its totient is φ = 7577136135360.

The previous prime is 22100122222219. The next prime is 22100122222307. The reversal of 22100122222220 is 2222222100122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22100122222192 and 22100122222201.

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, 26517665 + ... + 27338375.

It is an arithmetic number, because the mean of its divisors is an integer number (1105013202496).

Almost surely, 2^{22100122222220} is an apocalyptic number.

22100122222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100122222220 is an abundant number, since it is smaller than the sum of its proper divisors (30940511497588).

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

22100122222220 is a wasteful number, since it uses less digits than its factorization.

22100122222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013070 (or 1013068 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22100122222220 its reverse (2222222100122), we get a palindrome (24322344322342).

The spelling of 22100122222220 in words is "twenty-two trillion, one hundred billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".