111210000120 has 96 divisors (see below), whose sum is σ = 361842858000. Its totient is φ = 29622329856.

The previous prime is 111210000113. The next prime is 111210000127. The reversal of 111210000120 is 21000012111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111210000113) and next prime (111210000127).

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 (111210000127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142956 + ... + 492804.

Almost surely, 2^111210000120 is an apocalyptic number.

111210000120 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 111210000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180921429000).

111210000120 is an abundant number, since it is smaller than the sum of its proper divisors (250632857880).

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

111210000120 is a wasteful number, since it uses less digits than its factorization.

111210000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350749 (or 350742 counting only the distinct ones).

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

Adding to 111210000120 its reverse (21000012111), we get a palindrome (132210012231).

The spelling of 111210000120 in words is "one hundred eleven billion, two hundred ten million, one hundred twenty", and thus it is an aban number.