111020132100 has 108 divisors (see below), whose sum is σ = 329245423472. Its totient is φ = 28883155200.

The previous prime is 111020132087. The next prime is 111020132101. The reversal of 111020132100 is 1231020111.

It is a super-3 number, since 3×111020132100³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (111020132101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 394227 + ... + 614373.

Almost surely, 2^111020132100 is an apocalyptic number.

111020132100 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 111020132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164622711736).

111020132100 is an abundant number, since it is smaller than the sum of its proper divisors (218225291372).

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

111020132100 is a wasteful number, since it uses less digits than its factorization.

111020132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220246 (or 220198 counting only the distinct ones).

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

Adding to 111020132100 its reverse (1231020111), we get a palindrome (112251152211).

The spelling of 111020132100 in words is "one hundred eleven billion, twenty million, one hundred thirty-two thousand, one hundred".