22111222202120 has 16 divisors (see below), whose sum is σ = 49750249954860. Its totient is φ = 8844488880832.

The previous prime is 22111222202117. The next prime is 22111222202143. The reversal of 22111222202120 is 2120222211122.

It can be written as a sum of positive squares in 2 ways, for example, as 21486543788164 + 624678413956 = 4635358^2 + 790366^2 .

It is a super-2 number, since 2×22111222202120² (a number of 27 digits) contains 22 as substring.

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 = 22111222202092 and 22111222202101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276390277487 + ... + 276390277566.

Almost surely, 2^{22111222202120} is an apocalyptic number.

22111222202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111222202120 is an abundant number, since it is smaller than the sum of its proper divisors (27639027752740).

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

22111222202120 is a wasteful number, since it uses less digits than its factorization.

22111222202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552780555064 (or 552780555060 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22111222202120 its reverse (2120222211122), we get a palindrome (24231444413242).

The spelling of 22111222202120 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty".