13122122121 has 32 divisors (see below), whose sum is σ = 19648419840. Its totient is φ = 8654850000.

The previous prime is 13122122107. The next prime is 13122122149. The reversal of 13122122121 is 12122122131.

It is not a de Polignac number, because 13122122121 - 2²⁵ = 13088567689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13122122094 and 13122122103.

It is not an unprimeable number, because it can be changed into a prime (13122122021) 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, 1016916 + ... + 1029738.

It is an arithmetic number, because the mean of its divisors is an integer number (614013120).

Almost surely, 2^13122122121 is an apocalyptic number.

It is an amenable number.

13122122121 is a deficient number, since it is larger than the sum of its proper divisors (6526297719).

13122122121 is a wasteful number, since it uses less digits than its factorization.

13122122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13234 (or 13228 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 13122122121 its reverse (12122122131), we get a palindrome (25244244252).

The spelling of 13122122121 in words is "thirteen billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".