13020110021 has 2 divisors, whose sum is σ = 13020110022. Its totient is φ = 13020110020.

The previous prime is 13020110011. The next prime is 13020110027. The reversal of 13020110021 is 12001102031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6660844996 + 6359265025 = 81614^2 + 79745^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020110021 - 2¹⁸ = 13019847877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020109984 and 13020110011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020110027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510055010 + 6510055011.

It is an arithmetic number, because the mean of its divisors is an integer number (6510055011).

Almost surely, 2^13020110021 is an apocalyptic number.

It is an amenable number.

13020110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020110021 is an equidigital number, since it uses as much as digits as its factorization.

13020110021 is an evil number, because the sum of its binary digits is even.

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

Adding to 13020110021 its reverse (12001102031), we get a palindrome (25021212052).

The spelling of 13020110021 in words is "thirteen billion, twenty million, one hundred ten thousand, twenty-one".