12122113 has 4 divisors (see below), whose sum is σ = 12189268. Its totient is φ = 12054960.

The previous prime is 12122111. The next prime is 12122119. The reversal of 12122113 is 31122121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1046529 + 11075584 = 1023^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122113 - 2¹ = 12122111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122093 and 12122102.

It is not an unprimeable number, because it can be changed into a prime (12122111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33306 + ... + 33667.

It is an arithmetic number, because the mean of its divisors is an integer number (3047317).

Almost surely, 2^12122113 is an apocalyptic number.

It is an amenable number.

12122113 is a deficient number, since it is larger than the sum of its proper divisors (67155).

12122113 is an equidigital number, since it uses as much as digits as its factorization.

12122113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67154.

The product of its digits is 24, while the sum is 13.

The square root of 12122113 is about 3481.6824955760. The cubic root of 12122113 is about 229.7168096215.

Adding to 12122113 its reverse (31122121), we get a palindrome (43244234).

The spelling of 12122113 in words is "twelve million, one hundred twenty-two thousand, one hundred thirteen".