121813314585 has 16 divisors (see below), whose sum is σ = 195377844480. Its totient is φ = 64808254080.

The previous prime is 121813314569. The next prime is 121813314607. The reversal of 121813314585 is 585413318121.

It is not a de Polignac number, because 121813314585 - 2⁴ = 121813314569 is a prime.

It is a super-2 number, since 2×121813314585² (a number of 23 digits) contains 22 as substring.

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, 9921601 + ... + 9933870.

It is an arithmetic number, because the mean of its divisors is an integer number (12211115280).

Almost surely, 2^121813314585 is an apocalyptic number.

121813314585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121813314585 is a deficient number, since it is larger than the sum of its proper divisors (73564529895).

121813314585 is a wasteful number, since it uses less digits than its factorization.

121813314585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19855888.

The product of its digits is 115200, while the sum is 42.

The spelling of 121813314585 in words is "one hundred twenty-one billion, eight hundred thirteen million, three hundred fourteen thousand, five hundred eighty-five".