11222221112120 has 64 divisors (see below), whose sum is σ = 26042551056000. Its totient is φ = 4349881292800.

The previous prime is 11222221112107. The next prime is 11222221112143. The reversal of 11222221112120 is 2121112222211.

It is a super-2 number, since 2×11222221112120² (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 = 11222221112092 and 11222221112101.

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, 29360945 + ... + 29740704.

It is an arithmetic number, because the mean of its divisors is an integer number (406914860250).

Almost surely, 2^{11222221112120} is an apocalyptic number.

11222221112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222221112120 is an abundant number, since it is smaller than the sum of its proper divisors (14820329943880).

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

11222221112120 is a wasteful number, since it uses less digits than its factorization.

11222221112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59101808 (or 59101804 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11222221112120 its reverse (2121112222211), we get a palindrome (13343333334331).

The spelling of 11222221112120 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty".