12121332113 has 16 divisors (see below), whose sum is σ = 13475358720. Its totient is φ = 10810098000.

The previous prime is 12121332079. The next prime is 12121332187. The reversal of 12121332113 is 31123312121.

It is a happy number.

It is not a de Polignac number, because 12121332113 - 2¹² = 12121328017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121335113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296888 + ... + 335238.

It is an arithmetic number, because the mean of its divisors is an integer number (842209920).

Almost surely, 2^12121332113 is an apocalyptic number.

It is an amenable number.

12121332113 is a deficient number, since it is larger than the sum of its proper divisors (1354026607).

12121332113 is a wasteful number, since it uses less digits than its factorization.

12121332113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38908.

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

Adding to 12121332113 its reverse (31123312121), we get a palindrome (43244644234).

The spelling of 12121332113 in words is "twelve billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred thirteen".