111010020120 has 48 divisors (see below), whose sum is σ = 360782566560. Its totient is φ = 29602671936.

The previous prime is 111010020097. The next prime is 111010020127. The reversal of 111010020120 is 21020010111.

It is a happy number.

It is a super-3 number, since 3×111010020120³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010020127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154180224 + ... + 154180943.

It is an arithmetic number, because the mean of its divisors is an integer number (7516303470).

Almost surely, 2^111010020120 is an apocalyptic number.

111010020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111010020120 is an abundant number, since it is smaller than the sum of its proper divisors (249772546440).

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

111010020120 is a wasteful number, since it uses less digits than its factorization.

111010020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308361184 (or 308361177 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111010020120 its reverse (21020010111), we get a palindrome (132030030231).

The spelling of 111010020120 in words is "one hundred eleven billion, ten million, twenty thousand, one hundred twenty".