111121220012120 has 64 divisors (see below), whose sum is σ = 254262787754400. Its totient is φ = 43694716672000.

The previous prime is 111121220012119. The next prime is 111121220012147. The reversal of 111121220012120 is 21210022121111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441706370 + ... + 441957870.

Almost surely, 2^{111121220012120} is an apocalyptic number.

111121220012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121220012120 is an abundant number, since it is smaller than the sum of its proper divisors (143141567742280).

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

111121220012120 is a wasteful number, since it uses less digits than its factorization.

111121220012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438788 (or 438784 counting only the distinct ones).

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

Adding to 111121220012120 its reverse (21210022121111), we get a palindrome (132331242133231).

The spelling of 111121220012120 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, one hundred twenty".