111100221022122 has 48 divisors (see below), whose sum is σ = 244118651954112. Its totient is φ = 36510145869120.

The previous prime is 111100221022111. The next prime is 111100221022123. The reversal of 111100221022122 is 221220122001111.

111100221022122 is a `hidden beast` number, since 111 + 100 + 2 + 210 + 221 + 22 = 666.

It is a super-2 number, since 2×111100221022122² (a number of 29 digits) contains 22 as substring.

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 = 111100221022095 and 111100221022104.

It is not an unprimeable number, because it can be changed into a prime (111100221022123) 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, 26231878 + ... + 30171374.

It is an arithmetic number, because the mean of its divisors is an integer number (5085805249044).

Almost surely, 2^{111100221022122} is an apocalyptic number.

111100221022122 is an abundant number, since it is smaller than the sum of its proper divisors (133018430931990).

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

111100221022122 is a wasteful number, since it uses less digits than its factorization.

111100221022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961643 (or 3961640 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111100221022122 its reverse (221220122001111), we get a palindrome (332320343023233).

The spelling of 111100221022122 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-two".