13112335421 has 2 divisors, whose sum is σ = 13112335422. Its totient is φ = 13112335420.

The previous prime is 13112335417. The next prime is 13112335447. The reversal of 13112335421 is 12453321131.

It is an a-pointer prime, because the next prime (13112335447) can be obtained adding 13112335421 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12807448900 + 304886521 = 113170^2 + 17461^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112335421 - 2² = 13112335417 is a prime.

It is a super-2 number, since 2×13112335421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13115335421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556167710 + 6556167711.

It is an arithmetic number, because the mean of its divisors is an integer number (6556167711).

Almost surely, 2^13112335421 is an apocalyptic number.

It is an amenable number.

13112335421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112335421 is an equidigital number, since it uses as much as digits as its factorization.

13112335421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

Adding to 13112335421 its reverse (12453321131), we get a palindrome (25565656552).

The spelling of 13112335421 in words is "thirteen billion, one hundred twelve million, three hundred thirty-five thousand, four hundred twenty-one".