22102011122220 has 72 divisors (see below), whose sum is σ = 67043602560480. Its totient is φ = 5893796183040.

The previous prime is 22102011122167. The next prime is 22102011122237. The reversal of 22102011122220 is 2222111020122.

It is a happy number.

22102011122220 is a `hidden beast` number, since 2 + 210 + 201 + 11 + 22 + 220 = 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 = 22102011122193 and 22102011122202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14570361 + ... + 16015599.

Almost surely, 2^{22102011122220} is an apocalyptic number.

22102011122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102011122220 is an abundant number, since it is smaller than the sum of its proper divisors (44941591438260).

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

22102011122220 is a wasteful number, since it uses less digits than its factorization.

22102011122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530215 (or 1530210 counting only the distinct ones).

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

Adding to 22102011122220 its reverse (2222111020122), we get a palindrome (24324122142342).

The spelling of 22102011122220 in words is "twenty-two trillion, one hundred two billion, eleven million, one hundred twenty-two thousand, two hundred twenty".