121320115 has 16 divisors (see below), whose sum is σ = 166845888. Its totient is φ = 82958976.

The previous prime is 121320103. The next prime is 121320163. The reversal of 121320115 is 511023121.

It is a cyclic number.

It is not a de Polignac number, because 121320115 - 2⁹ = 121319603 is a prime.

It is a super-2 number, since 2×121320115² = 29437140607226450, which 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 15 ways as a sum of consecutive naturals, for example, 8409 + ... + 17701.

It is an arithmetic number, because the mean of its divisors is an integer number (10427868).

Almost surely, 2^121320115 is an apocalyptic number.

121320115 is a deficient number, since it is larger than the sum of its proper divisors (45525773).

121320115 is an equidigital number, since it uses as much as digits as its factorization.

121320115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9678.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121320115 is about 11014.5410707846. The cubic root of 121320115 is about 495.0445356658.

Adding to 121320115 its reverse (511023121), we get a palindrome (632343236).

The spelling of 121320115 in words is "one hundred twenty-one million, three hundred twenty thousand, one hundred fifteen".