121509306474 has 8 divisors (see below), whose sum is σ = 243018612960. Its totient is φ = 40503102156.

The previous prime is 121509306467. The next prime is 121509306487. The reversal of 121509306474 is 474603905121.

It is a sphenic number, since it is the product of 3 distinct primes.

121509306474 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10125775534 + ... + 10125775545.

It is an arithmetic number, because the mean of its divisors is an integer number (30377326620).

Almost surely, 2^121509306474 is an apocalyptic number.

121509306474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121509306474 is a wasteful number, since it uses less digits than its factorization.

121509306474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20251551084.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 121509306474 in words is "one hundred twenty-one billion, five hundred nine million, three hundred six thousand, four hundred seventy-four".