121220111420984 has 16 divisors (see below), whose sum is σ = 227288235121800. Its totient is φ = 60609915388512.

The previous prime is 121220111420983. The next prime is 121220111421053. The reversal of 121220111420984 is 489024111022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220111420983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13822442 + ... + 20820665.

Almost surely, 2^{121220111420984} is an apocalyptic number.

It is an amenable number.

121220111420984 is a deficient number, since it is larger than the sum of its proper divisors (106068123700816).

121220111420984 is a wasteful number, since it uses less digits than its factorization.

121220111420984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35080502 (or 35080498 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 121220111420984 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, four hundred twenty thousand, nine hundred eighty-four".