111202222122 has 48 divisors (see below), whose sum is σ = 246189565440. Its totient is φ = 36260299296.

The previous prime is 111202222121. The next prime is 111202222123. The reversal of 111202222122 is 221222202111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111202222121) and next prime (111202222123).

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 = 111202222095 and 111202222104.

It is not an unprimeable number, because it can be changed into a prime (111202222121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684143 + ... + 1748925.

It is an arithmetic number, because the mean of its divisors is an integer number (5128949280).

Almost surely, 2^111202222122 is an apocalyptic number.

111202222122 is an abundant number, since it is smaller than the sum of its proper divisors (134987343318).

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

111202222122 is a wasteful number, since it uses less digits than its factorization.

111202222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66867 (or 66864 counting only the distinct ones).

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

Adding to 111202222122 its reverse (221222202111), we get a palindrome (332424424233).

The spelling of 111202222122 in words is "one hundred eleven billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-two".