13100233120421 has 4 divisors (see below), whose sum is σ = 13100615386572. Its totient is φ = 13099850854272.

The previous prime is 13100233120409. The next prime is 13100233120453. The reversal of 13100233120421 is 12402133200131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12708155522500 + 392077597921 = 3564850^2 + 626161^2 .

It is a cyclic number.

It is not a de Polignac number, because 13100233120421 - 2²² = 13100228926117 is a prime.

It is a super-2 number, since 2×13100233120421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100233120321) 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, 191081666 + ... + 191150211.

It is an arithmetic number, because the mean of its divisors is an integer number (3275153846643).

Almost surely, 2^{13100233120421} is an apocalyptic number.

It is an amenable number.

13100233120421 is a deficient number, since it is larger than the sum of its proper divisors (382266151).

13100233120421 is an equidigital number, since it uses as much as digits as its factorization.

13100233120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382266150.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13100233120421 its reverse (12402133200131), we get a palindrome (25502366320552).

The spelling of 13100233120421 in words is "thirteen trillion, one hundred billion, two hundred thirty-three million, one hundred twenty thousand, four hundred twenty-one".