121573229280 has 96 divisors (see below), whose sum is σ = 396161085600. Its totient is φ = 31301609472.

The previous prime is 121573229279. The next prime is 121573229339. The reversal of 121573229280 is 82922375121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4352935 + ... + 4380774.

It is an arithmetic number, because the mean of its divisors is an integer number (4126677975).

Almost surely, 2^121573229280 is an apocalyptic number.

121573229280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121573229280 is an abundant number, since it is smaller than the sum of its proper divisors (274587856320).

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

121573229280 is a wasteful number, since it uses less digits than its factorization.

121573229280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733756 (or 8733748 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 121573229280 in words is "one hundred twenty-one billion, five hundred seventy-three million, two hundred twenty-nine thousand, two hundred eighty".