121320585 has 80 divisors (see below), whose sum is σ = 234596736. Its totient is φ = 59761152.

The previous prime is 121320539. The next prime is 121320593. The reversal of 121320585 is 585023121.

It is a happy number.

It is not a de Polignac number, because 121320585 - 2¹⁴ = 121304201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 461164 + ... + 461426.

Almost surely, 2^121320585 is an apocalyptic number.

121320585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121320585 is a deficient number, since it is larger than the sum of its proper divisors (113276151).

121320585 is a wasteful number, since it uses less digits than its factorization.

121320585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 121320585 is about 11014.5624061966. The cubic root of 121320585 is about 495.0451749405.

The spelling of 121320585 in words is "one hundred twenty-one million, three hundred twenty thousand, five hundred eighty-five".