121101022112220 has 72 divisors (see below), whose sum is σ = 367342897783680. Its totient is φ = 32293330669440.

The previous prime is 121101022112219. The next prime is 121101022112237. The reversal of 121101022112220 is 22211220101121.

121101022112220 is a `hidden beast` number, since 1 + 211 + 0 + 1 + 0 + 221 + 12 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121101022112193 and 121101022112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18763990 + ... + 24378050.

It is an arithmetic number, because the mean of its divisors is an integer number (5101984691440).

Almost surely, 2^{121101022112220} is an apocalyptic number.

121101022112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101022112220 is an abundant number, since it is smaller than the sum of its proper divisors (246241875671460).

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

121101022112220 is a wasteful number, since it uses less digits than its factorization.

121101022112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5733915 (or 5733910 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121101022112220 its reverse (22211220101121), we get a palindrome (143312242213341).

The spelling of 121101022112220 in words is "one hundred twenty-one trillion, one hundred one billion, twenty-two million, one hundred twelve thousand, two hundred twenty".