121285015 has 8 divisors (see below), whose sum is σ = 145612368. Its totient is φ = 96981120.

The previous prime is 121284979. The next prime is 121285033. The reversal of 121285015 is 510582121.

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

It is not a de Polignac number, because 121285015 - 2⁷ = 121284887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8895 + ... + 17935.

It is an arithmetic number, because the mean of its divisors is an integer number (18201546).

Almost surely, 2^121285015 is an apocalyptic number.

121285015 is a deficient number, since it is larger than the sum of its proper divisors (24327353).

121285015 is an equidigital number, since it uses as much as digits as its factorization.

121285015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11729.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 121285015 is about 11012.9476072485. The cubic root of 121285015 is about 494.9967894224.

The spelling of 121285015 in words is "one hundred twenty-one million, two hundred eighty-five thousand, fifteen".