12013251 has 4 divisors (see below), whose sum is σ = 16017672. Its totient is φ = 8008832.

The previous prime is 12013229. The next prime is 12013259. The reversal of 12013251 is 15231021.

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

It is a cyclic number.

It is not a de Polignac number, because 12013251 - 2⁵ = 12013219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12013251.

It is not an unprimeable number, because it can be changed into a prime (12013259) 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, 2002206 + ... + 2002211.

It is an arithmetic number, because the mean of its divisors is an integer number (4004418).

Almost surely, 2^12013251 is an apocalyptic number.

12013251 is a deficient number, since it is larger than the sum of its proper divisors (4004421).

12013251 is an equidigital number, since it uses as much as digits as its factorization.

12013251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004420.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12013251 is about 3466.0137045315. The cubic root of 12013251 is about 229.0270875581.

Adding to 12013251 its reverse (15231021), we get a palindrome (27244272).

The spelling of 12013251 in words is "twelve million, thirteen thousand, two hundred fifty-one".