121112101111220 has 24 divisors (see below), whose sum is σ = 254339413298208. Its totient is φ = 48444078356000.

The previous prime is 121112101111207. The next prime is 121112101111249. The reversal of 121112101111220 is 22111101211121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46326506 + ... + 48870945.

It is an arithmetic number, because the mean of its divisors is an integer number (10597475554092).

Almost surely, 2^{121112101111220} is an apocalyptic number.

121112101111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112101111220 is an abundant number, since it is smaller than the sum of its proper divisors (133227312186988).

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

121112101111220 is a wasteful number, since it uses less digits than its factorization.

121112101111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95261071 (or 95261069 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121112101111220 its reverse (22111101211121), we get a palindrome (143223202322341).

Subtracting from 121112101111220 its reverse (22111101211121), we obtain a palindrome (99000999900099).

The spelling of 121112101111220 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred one million, one hundred eleven thousand, two hundred twenty".