111012221200 has 60 divisors (see below), whose sum is σ = 267174498448. Its totient is φ = 44327030400.

The previous prime is 111012221171. The next prime is 111012221261. The reversal of 111012221200 is 2122210111.

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, 14622 + ... + 471421.

Almost surely, 2^111012221200 is an apocalyptic number.

111012221200 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 111012221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133587249224).

111012221200 is an abundant number, since it is smaller than the sum of its proper divisors (156162277248).

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

111012221200 is a wasteful number, since it uses less digits than its factorization.

111012221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486632 (or 486621 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111012221200 its reverse (2122210111), we get a palindrome (113134431311).

The spelling of 111012221200 in words is "one hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred".