103120121 has 4 divisors (see below), whose sum is σ = 111052452. Its totient is φ = 95187792.

The previous prime is 103120111. The next prime is 103120123. The reversal of 103120121 is 121021301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6864400 + 96255721 = 2620^2 + 9811^2 .

It is a cyclic number.

It is not a de Polignac number, because 103120121 - 2⁶ = 103120057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103120123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3966146 + ... + 3966171.

It is an arithmetic number, because the mean of its divisors is an integer number (27763113).

Almost surely, 2^103120121 is an apocalyptic number.

It is an amenable number.

103120121 is a deficient number, since it is larger than the sum of its proper divisors (7932331).

103120121 is an equidigital number, since it uses as much as digits as its factorization.

103120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932330.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 103120121 is about 10154.8077775997. The cubic root of 103120121 is about 468.9369682356.

Adding to 103120121 its reverse (121021301), we get a palindrome (224141422).

The spelling of 103120121 in words is "one hundred three million, one hundred twenty thousand, one hundred twenty-one".