103313020121 has 4 divisors (see below), whose sum is σ = 103318916772. Its totient is φ = 103307123472.

The previous prime is 103313020117. The next prime is 103313020127. The reversal of 103313020121 is 121020313301.

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 39746004496 + 63567015625 = 199364^2 + 252125^2 .

It is a cyclic number.

It is not a de Polignac number, because 103313020121 - 2² = 103313020117 is a prime.

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 103313020121.

It is not an unprimeable number, because it can be changed into a prime (103313020127) 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, 2921966 + ... + 2957111.

It is an arithmetic number, because the mean of its divisors is an integer number (25829729193).

Almost surely, 2^103313020121 is an apocalyptic number.

It is an amenable number.

103313020121 is a deficient number, since it is larger than the sum of its proper divisors (5896651).

103313020121 is an equidigital number, since it uses as much as digits as its factorization.

103313020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5896650.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103313020121 its reverse (121020313301), we get a palindrome (224333333422).

The spelling of 103313020121 in words is "one hundred three billion, three hundred thirteen million, twenty thousand, one hundred twenty-one".