111020202120120 has 64 divisors (see below), whose sum is σ = 333093094261920. Its totient is φ = 29602499418624.

The previous prime is 111020202120089. The next prime is 111020202120127. The reversal of 111020202120120 is 21021202020111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111020202120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020202120127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43886599 + ... + 46347318.

Almost surely, 2^{111020202120120} is an apocalyptic number.

111020202120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020202120120 is an abundant number, since it is smaller than the sum of its proper divisors (222072892141800).

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

111020202120120 is a wasteful number, since it uses less digits than its factorization.

111020202120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90244184 (or 90244180 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111020202120120 its reverse (21021202020111), we get a palindrome (132041404140231).

The spelling of 111020202120120 in words is "one hundred eleven trillion, twenty billion, two hundred two million, one hundred twenty thousand, one hundred twenty".