121845372428 has 12 divisors (see below), whose sum is σ = 229631663520. Its totient is φ = 56236325712.

The previous prime is 121845372427. The next prime is 121845372431. The reversal of 121845372428 is 824273548121.

It is not an unprimeable number, because it can be changed into a prime (121845372427) 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, 1171590068 + ... + 1171590171.

It is an arithmetic number, because the mean of its divisors is an integer number (19135971960).

Almost surely, 2^121845372428 is an apocalyptic number.

It is an amenable number.

121845372428 is a deficient number, since it is larger than the sum of its proper divisors (107786291092).

121845372428 is a wasteful number, since it uses less digits than its factorization.

121845372428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343180256 (or 2343180254 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The spelling of 121845372428 in words is "one hundred twenty-one billion, eight hundred forty-five million, three hundred seventy-two thousand, four hundred twenty-eight".