111202002120 has 128 divisors (see below), whose sum is σ = 368540928000. Its totient is φ = 26616794880.

The previous prime is 111202002103. The next prime is 111202002127. The reversal of 111202002120 is 21200202111.

It is a super-3 number, since 3×111202002120³ (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 a junction number, because it is equal to n+sod(n) for n = 111202002096 and 111202002105.

It is not an unprimeable number, because it can be changed into a prime (111202002127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428910 + ... + 637469.

It is an arithmetic number, because the mean of its divisors is an integer number (2879226000).

Almost surely, 2^111202002120 is an apocalyptic number.

111202002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202002120 is an abundant number, since it is smaller than the sum of its proper divisors (257338925880).

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

111202002120 is a wasteful number, since it uses less digits than its factorization.

111202002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066483 (or 1066479 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111202002120 its reverse (21200202111), we get a palindrome (132402204231).

Subtracting from 111202002120 its reverse (21200202111), we obtain a square (90001800009 = 300003²).

The spelling of 111202002120 in words is "one hundred eleven billion, two hundred two million, two thousand, one hundred twenty".