111212310472120 has 128 divisors (see below), whose sum is σ = 293998537889280. Its totient is φ = 37326864960000.

The previous prime is 111212310472093. The next prime is 111212310472177. The reversal of 111212310472120 is 21274013212111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67662045 + ... + 69286195.

It is an arithmetic number, because the mean of its divisors is an integer number (2296863577260).

Almost surely, 2^{111212310472120} is an apocalyptic number.

111212310472120 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 111212310472120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146999268944640).

111212310472120 is an abundant number, since it is smaller than the sum of its proper divisors (182786227417160).

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

111212310472120 is a wasteful number, since it uses less digits than its factorization.

111212310472120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636157 (or 1636153 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 111212310472120 its reverse (21274013212111), we get a palindrome (132486323684231).

The spelling of 111212310472120 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred ten million, four hundred seventy-two thousand, one hundred twenty".