13263020121 has 12 divisors (see below), whose sum is σ = 19148976528. Its totient is φ = 8161858224.

The previous prime is 13263020119. The next prime is 13263020123. The reversal of 13263020121 is 12102036231.

It is an interprime number because it is at equal distance from previous prime (13263020119) and next prime (13263020123).

It is not a de Polignac number, because 13263020121 - 2¹ = 13263020119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13263020123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13079395 + ... + 13080408.

It is an arithmetic number, because the mean of its divisors is an integer number (1595748044).

Almost surely, 2^13263020121 is an apocalyptic number.

It is an amenable number.

13263020121 is a deficient number, since it is larger than the sum of its proper divisors (5885956407).

13263020121 is a wasteful number, since it uses less digits than its factorization.

13263020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26159832 (or 26159819 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13263020121 its reverse (12102036231), we get a palindrome (25365056352).

The spelling of 13263020121 in words is "thirteen billion, two hundred sixty-three million, twenty thousand, one hundred twenty-one".