111202121220120 has 96 divisors (see below), whose sum is σ = 413036450255520. Its totient is φ = 25417627706880.

The previous prime is 111202121220101. The next prime is 111202121220161. The reversal of 111202121220120 is 21022121202111.

111202121220120 is a `hidden beast` number, since 1 + 1 + 1 + 202 + 121 + 220 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111202121220093 and 111202121220102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22063910421 + ... + 22063915460.

It is an arithmetic number, because the mean of its divisors is an integer number (4302463023495).

Almost surely, 2^{111202121220120} is an apocalyptic number.

111202121220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202121220120 is an abundant number, since it is smaller than the sum of its proper divisors (301834329035400).

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

111202121220120 is a wasteful number, since it uses less digits than its factorization.

111202121220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44127825905 (or 44127825898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111202121220120 its reverse (21022121202111), we get a palindrome (132224242422231).

The spelling of 111202121220120 in words is "one hundred eleven trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty".