111220021211120 has 40 divisors (see below), whose sum is σ = 259022614433616. Its totient is φ = 44412986528768.

The previous prime is 111220021211021. The next prime is 111220021211129. The reversal of 111220021211120 is 21112120022111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×111220021211120² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220021211129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172170322 + ... + 1172265201.

Almost surely, 2^{111220021211120} is an apocalyptic number.

111220021211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220021211120 is an abundant number, since it is smaller than the sum of its proper divisors (147802593222496).

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

111220021211120 is a wasteful number, since it uses less digits than its factorization.

111220021211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344436129 (or 2344436123 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111220021211120 its reverse (21112120022111), we get a palindrome (132332141233231).

The spelling of 111220021211120 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-one million, two hundred eleven thousand, one hundred twenty".