111102122220 has 96 divisors (see below), whose sum is σ = 322010185728. Its totient is φ = 28599443712.

The previous prime is 111102122141. The next prime is 111102122239. The reversal of 111102122220 is 22221201111.

It is a super-3 number, since 3×111102122220³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111102122220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84909 + ... + 478971.

It is an arithmetic number, because the mean of its divisors is an integer number (3354272768).

Almost surely, 2^111102122220 is an apocalyptic number.

111102122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111102122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161005092864).

111102122220 is an abundant number, since it is smaller than the sum of its proper divisors (210908063508).

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

111102122220 is a wasteful number, since it uses less digits than its factorization.

111102122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394239 (or 394237 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111102122220 its reverse (22221201111), we get a palindrome (133323323331).

The spelling of 111102122220 in words is "one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty".