111021010122 has 64 divisors (see below), whose sum is σ = 244765825920. Its totient is φ = 33290592000.

The previous prime is 111021010109. The next prime is 111021010127. The reversal of 111021010122 is 221010120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021010098 and 111021010107.

It is not an unprimeable number, because it can be changed into a prime (111021010127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15388188 + ... + 15395400.

It is an arithmetic number, because the mean of its divisors is an integer number (3824466030).

Almost surely, 2^111021010122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021010122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122382912960).

111021010122 is an abundant number, since it is smaller than the sum of its proper divisors (133744815798).

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

111021010122 is a wasteful number, since it uses less digits than its factorization.

111021010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111021010122 its reverse (221010120111), we get a palindrome (332031130233).

The spelling of 111021010122 in words is "one hundred eleven billion, twenty-one million, ten thousand, one hundred twenty-two".