121816465 has 8 divisors (see below), whose sum is σ = 146397888. Its totient is φ = 97307760.

The previous prime is 121816459. The next prime is 121816489. The reversal of 121816465 is 564618121.

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

It is not a de Polignac number, because 121816465 - 2⁷ = 121816337 is a prime.

It is a super-2 number, since 2×121816465² = 29678502290192450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121816465.

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, 14421 + ... + 21250.

It is an arithmetic number, because the mean of its divisors is an integer number (18299736).

Almost surely, 2^121816465 is an apocalyptic number.

It is an amenable number.

121816465 is a deficient number, since it is larger than the sum of its proper divisors (24581423).

121816465 is an equidigital number, since it uses as much as digits as its factorization.

121816465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36359.

The product of its digits is 11520, while the sum is 34.

The square root of 121816465 is about 11037.0496510616. The cubic root of 121816465 is about 495.7187327989.

The spelling of 121816465 in words is "one hundred twenty-one million, eight hundred sixteen thousand, four hundred sixty-five".