11221220002122 has 24 divisors (see below), whose sum is σ = 26182846672164. Its totient is φ = 3452683077504.

The previous prime is 11221220002099. The next prime is 11221220002141. The reversal of 11221220002122 is 22120002212211.

It is a happy number.

11221220002122 is a `hidden beast` number, since 11 + 221 + 220 + 0 + 0 + 212 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9499642458201 + 1721577543921 = 3082149^2 + 1312089^2 .

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 = 11221220002095 and 11221220002104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23976965583 + ... + 23976966050.

Almost surely, 2^{11221220002122} is an apocalyptic number.

11221220002122 is an abundant number, since it is smaller than the sum of its proper divisors (14961626670042).

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

11221220002122 is a wasteful number, since it uses less digits than its factorization.

11221220002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47953931654 (or 47953931651 counting only the distinct ones).

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

Adding to 11221220002122 its reverse (22120002212211), we get a palindrome (33341222214333).

The spelling of 11221220002122 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty million, two thousand, one hundred twenty-two".