13120302121 has 4 divisors (see below), whose sum is σ = 13123164544. Its totient is φ = 13117439700.

The previous prime is 13120302101. The next prime is 13120302133. The reversal of 13120302121 is 12120302131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13120302121 - 2⁷ = 13120301993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13120302095 and 13120302104.

It is not an unprimeable number, because it can be changed into a prime (13120302101) 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, 1424325 + ... + 1433506.

It is an arithmetic number, because the mean of its divisors is an integer number (3280791136).

Almost surely, 2^13120302121 is an apocalyptic number.

It is an amenable number.

13120302121 is a deficient number, since it is larger than the sum of its proper divisors (2862423).

13120302121 is an equidigital number, since it uses as much as digits as its factorization.

13120302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862422.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13120302121 its reverse (12120302131), we get a palindrome (25240604252).

The spelling of 13120302121 in words is "thirteen billion, one hundred twenty million, three hundred two thousand, one hundred twenty-one".