13121331022 has 4 divisors (see below), whose sum is σ = 19681996536. Its totient is φ = 6560665510.

The previous prime is 13121330951. The next prime is 13121331029. The reversal of 13121331022 is 22013312131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22013312131 = 103 ⋅213721477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121331029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280332754 + ... + 3280332757.

It is an arithmetic number, because the mean of its divisors is an integer number (4920499134).

Almost surely, 2^13121331022 is an apocalyptic number.

13121331022 is a deficient number, since it is larger than the sum of its proper divisors (6560665514).

13121331022 is an equidigital number, since it uses as much as digits as its factorization.

13121331022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560665513.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13121331022 its reverse (22013312131), we get a palindrome (35134643153).

The spelling of 13121331022 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-one thousand, twenty-two".