111122231200 has 72 divisors (see below), whose sum is σ = 271700297568. Its totient is φ = 44379559680.

The previous prime is 111122231179. The next prime is 111122231221. The reversal of 111122231200 is 2132221111.

It is an interprime number because it is at equal distance from previous prime (111122231179) and next prime (111122231221).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406389 + ... + 622411.

It is an arithmetic number, because the mean of its divisors is an integer number (3773615244).

Almost surely, 2^111122231200 is an apocalyptic number.

111122231200 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 111122231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135850148784).

111122231200 is an abundant number, since it is smaller than the sum of its proper divisors (160578066368).

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

111122231200 is a wasteful number, since it uses less digits than its factorization.

111122231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216686 (or 216673 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111122231200 its reverse (2132221111), we get a palindrome (113254452311).

The spelling of 111122231200 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred".