13121121122 has 16 divisors (see below), whose sum is σ = 19939617720. Its totient is φ = 6475051008.

The previous prime is 13121121109. The next prime is 13121121131. The reversal of 13121121122 is 22112112131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12662775841 + 458345281 = 112529^2 + 21409^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13121121122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61073 + ... + 173124.

Almost surely, 2^13121121122 is an apocalyptic number.

13121121122 is a deficient number, since it is larger than the sum of its proper divisors (6818496598).

13121121122 is a wasteful number, since it uses less digits than its factorization.

13121121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234565.

The product of its digits is 48, while the sum is 17.

Adding to 13121121122 its reverse (22112112131), we get a palindrome (35233233253).

The spelling of 13121121122 in words is "thirteen billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".