12122013 has 8 divisors (see below), whose sum is σ = 16182400. Its totient is φ = 8071488.

The previous prime is 12122009. The next prime is 12122021. The reversal of 12122013 is 31022121.

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

It is not a de Polignac number, because 12122013 - 2² = 12122009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122063) 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, 1173 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (2022800).

Almost surely, 2^12122013 is an apocalyptic number.

It is an amenable number.

12122013 is a deficient number, since it is larger than the sum of its proper divisors (4060387).

12122013 is a wasteful number, since it uses less digits than its factorization.

12122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12122013 is about 3481.6681346734. The cubic root of 12122013 is about 229.7161779454.

Adding to 12122013 its reverse (31022121), we get a palindrome (43144134).

The spelling of 12122013 in words is "twelve million, one hundred twenty-two thousand, thirteen".