13122415426 has 4 divisors (see below), whose sum is σ = 19683623142. Its totient is φ = 6561207712.

The previous prime is 13122415421. The next prime is 13122415429. The reversal of 13122415426 is 62451422131.

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

It can be written as a sum of positive squares in only one way, i.e., 12529444225 + 592971201 = 111935^2 + 24351^2 .

It is a super-2 number, since 2×13122415426² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13122415421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280603855 + ... + 3280603858.

Almost surely, 2^13122415426 is an apocalyptic number.

13122415426 is a deficient number, since it is larger than the sum of its proper divisors (6561207716).

13122415426 is an equidigital number, since it uses as much as digits as its factorization.

13122415426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561207715.

The product of its digits is 11520, while the sum is 31.

Adding to 13122415426 its reverse (62451422131), we get a palindrome (75573837557).

The spelling of 13122415426 in words is "thirteen billion, one hundred twenty-two million, four hundred fifteen thousand, four hundred twenty-six".