13112233121 has 8 divisors (see below), whose sum is σ = 14199756480. Its totient is φ = 12035979792.

The previous prime is 13112233073. The next prime is 13112233151. The reversal of 13112233121 is 12133221131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13112233121 - 2²² = 13108038817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13112233093 and 13112233102.

It is not an unprimeable number, because it can be changed into a prime (13112233151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815085 + ... + 2819738.

It is an arithmetic number, because the mean of its divisors is an integer number (1774969560).

Almost surely, 2^13112233121 is an apocalyptic number.

It is an amenable number.

13112233121 is a deficient number, since it is larger than the sum of its proper divisors (1087523359).

13112233121 is a wasteful number, since it uses less digits than its factorization.

13112233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635015.

The product of its digits is 216, while the sum is 20.

Adding to 13112233121 its reverse (12133221131), we get a palindrome (25245454252).

The spelling of 13112233121 in words is "thirteen billion, one hundred twelve million, two hundred thirty-three thousand, one hundred twenty-one".