13021121113 has 16 divisors (see below), whose sum is σ = 17482905216. Its totient is φ = 9365840640.

The previous prime is 13021121111. The next prime is 13021121149. The reversal of 13021121113 is 31112112031.

It is a happy number.

It is not a de Polignac number, because 13021121113 - 2¹ = 13021121111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13021121111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6503056 + ... + 6505057.

It is an arithmetic number, because the mean of its divisors is an integer number (1092681576).

Almost surely, 2^13021121113 is an apocalyptic number.

13021121113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13021121113 is a deficient number, since it is larger than the sum of its proper divisors (4461784103).

13021121113 is a wasteful number, since it uses less digits than its factorization.

13021121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13008144.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13021121113 its reverse (31112112031), we get a palindrome (44133233144).

The spelling of 13021121113 in words is "thirteen billion, twenty-one million, one hundred twenty-one thousand, one hundred thirteen".