13321121242 has 64 divisors (see below), whose sum is σ = 23741803008. Its totient is φ = 5526144000.

The previous prime is 13321121237. The next prime is 13321121243. The reversal of 13321121242 is 24212112331.

It is a super-2 number, since 2×13321121242² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (13321121243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10820767 + ... + 10821997.

It is an arithmetic number, because the mean of its divisors is an integer number (370965672).

Almost surely, 2^13321121242 is an apocalyptic number.

13321121242 is a deficient number, since it is larger than the sum of its proper divisors (10420681766).

13321121242 is a wasteful number, since it uses less digits than its factorization.

13321121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655.

The product of its digits is 576, while the sum is 22.

Adding to 13321121242 its reverse (24212112331), we get a palindrome (37533233573).

The spelling of 13321121242 in words is "thirteen billion, three hundred twenty-one million, one hundred twenty-one thousand, two hundred forty-two".