121220111220984 has 48 divisors (see below), whose sum is σ = 345583650414600. Its totient is φ = 38280035121984.

The previous prime is 121220111220983. The next prime is 121220111221007. The reversal of 121220111220984 is 489022111022121.

121220111220984 is a `hidden beast` number, since 1 + 21 + 220 + 111 + 220 + 9 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220111220983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44305594839 + ... + 44305597574.

Almost surely, 2^{121220111220984} is an apocalyptic number.

It is an amenable number.

121220111220984 is an abundant number, since it is smaller than the sum of its proper divisors (224363539193616).

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

121220111220984 is a wasteful number, since it uses less digits than its factorization.

121220111220984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88611192444 (or 88611192437 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 121220111220984 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, nine hundred eighty-four".