12251139 has 8 divisors (see below), whose sum is σ = 16365840. Its totient is φ = 8151936.

The previous prime is 12251131. The next prime is 12251147. The reversal of 12251139 is 93115221.

12251139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12251131) and next prime (12251147).

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

It is not a de Polignac number, because 12251139 - 2³ = 12251131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12251131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1882 + ... + 5295.

It is an arithmetic number, because the mean of its divisors is an integer number (2045730).

Almost surely, 2^12251139 is an apocalyptic number.

12251139 is a deficient number, since it is larger than the sum of its proper divisors (4114701).

12251139 is an equidigital number, since it uses as much as digits as its factorization.

12251139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749.

The product of its digits is 540, while the sum is 24.

The square root of 12251139 is about 3500.1627105036. The cubic root of 12251139 is about 230.5289589896.

The spelling of 12251139 in words is "twelve million, two hundred fifty-one thousand, one hundred thirty-nine".