121112013220 has 48 divisors (see below), whose sum is σ = 277558783488. Its totient is φ = 44024514560.

The previous prime is 121112013203. The next prime is 121112013227. The reversal of 121112013220 is 22310211121.

It is a junction number, because it is equal to n+sod(n) for n = 121112013194 and 121112013203.

It is not an unprimeable number, because it can be changed into a prime (121112013227) 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, 505677 + ... + 705643.

It is an arithmetic number, because the mean of its divisors is an integer number (5782474656).

Almost surely, 2^121112013220 is an apocalyptic number.

121112013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112013220 is an abundant number, since it is smaller than the sum of its proper divisors (156446770268).

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

121112013220 is a wasteful number, since it uses less digits than its factorization.

121112013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202740 (or 202738 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121112013220 its reverse (22310211121), we get a palindrome (143422224341).

The spelling of 121112013220 in words is "one hundred twenty-one billion, one hundred twelve million, thirteen thousand, two hundred twenty".