11222221122 has 24 divisors (see below), whose sum is σ = 27788357376. Its totient is φ = 3206348856.

The previous prime is 11222221103. The next prime is 11222221133. The reversal of 11222221122 is 22112222211.

It is a happy number.

It is a super-2 number, since 2×11222221122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11222221095 and 11222221104.

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, 44532498 + ... + 44532749.

It is an arithmetic number, because the mean of its divisors is an integer number (1157848224).

Almost surely, 2^11222221122 is an apocalyptic number.

11222221122 is an abundant number, since it is smaller than the sum of its proper divisors (16566136254).

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

11222221122 is a wasteful number, since it uses less digits than its factorization.

11222221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89065262 (or 89065259 counting only the distinct ones).

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

Adding to 11222221122 its reverse (22112222211), we get a palindrome (33334443333).

It can be divided in two parts, 112222211 and 22, that multiplied together give a palindrome (2468888642).

The spelling of 11222221122 in words is "eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".