121111022220120 has 128 divisors (see below), whose sum is σ = 403709437886400. Its totient is φ = 32295790153728.

The previous prime is 121111022220091. The next prime is 121111022220157. The reversal of 121111022220120 is 21022220111121.

121111022220120 is a `hidden beast` number, since 1 + 211 + 1 + 10 + 222 + 201 + 20 = 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 = 121111022220093 and 121111022220102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74642922 + ... + 76248198.

Almost surely, 2^{121111022220120} is an apocalyptic number.

121111022220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111022220120 is an abundant number, since it is smaller than the sum of its proper divisors (282598415666280).

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

121111022220120 is a wasteful number, since it uses less digits than its factorization.

121111022220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675154 (or 1675144 counting only the distinct ones).

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

Adding to 121111022220120 its reverse (21022220111121), we get a palindrome (142133242331241).

The spelling of 121111022220120 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-two million, two hundred twenty thousand, one hundred twenty".