13120322021 has 2 divisors, whose sum is σ = 13120322022. Its totient is φ = 13120322020.

The previous prime is 13120321993. The next prime is 13120322029. The reversal of 13120322021 is 12022302131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12941565121 + 178756900 = 113761^2 + 13370^2 .

It is a cyclic number.

It is not a de Polignac number, because 13120322021 - 2¹⁴ = 13120305637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13120322029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560161010 + 6560161011.

It is an arithmetic number, because the mean of its divisors is an integer number (6560161011).

Almost surely, 2^13120322021 is an apocalyptic number.

It is an amenable number.

13120322021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120322021 is an equidigital number, since it uses as much as digits as its factorization.

13120322021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13120322021 its reverse (12022302131), we get a palindrome (25142624152).

The spelling of 13120322021 in words is "thirteen billion, one hundred twenty million, three hundred twenty-two thousand, twenty-one".