111133121022 has 144 divisors (see below), whose sum is σ = 305755617024. Its totient is φ = 28847700000.

The previous prime is 111133121003. The next prime is 111133121093. The reversal of 111133121022 is 220121331111.

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 = 111133120986 and 111133121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23389147 + ... + 23393897.

It is an arithmetic number, because the mean of its divisors is an integer number (2123302896).

Almost surely, 2^111133121022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111133121022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152877808512).

111133121022 is an abundant number, since it is smaller than the sum of its proper divisors (194622496002).

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

111133121022 is a wasteful number, since it uses less digits than its factorization.

111133121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195 (or 7185 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111133121022 its reverse (220121331111), we get a palindrome (331254452133).

It can be divided in two parts, 1111 and 33121022, that added together give a palindrome (33122133).

The spelling of 111133121022 in words is "one hundred eleven billion, one hundred thirty-three million, one hundred twenty-one thousand, twenty-two".