121218170896 has 15 divisors (see below), whose sum is σ = 234862904413. Its totient is φ = 60608389120.

The previous prime is 121218170881. The next prime is 121218170917. The reversal of 121218170896 is 698071812121.

The square root of 121218170896 is 348164.

It is a perfect power (a square), and thus also a powerful number.

121218170896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 121129057296 + 89113600 = 348036^2 + 9440^2 .

It is a super-2 number, since 2×121218170896² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1349136 + ... + 1436176.

Almost surely, 2^121218170896 is an apocalyptic number.

121218170896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

121218170896 is the 348164-th square number.

It is an amenable number.

121218170896 is a deficient number, since it is larger than the sum of its proper divisors (113644733517).

121218170896 is an frugal number, since it uses more digits than its factorization.

121218170896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174090 (or 87043 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 121218170896 in words is "one hundred twenty-one billion, two hundred eighteen million, one hundred seventy thousand, eight hundred ninety-six".