12251138 has 8 divisors (see below), whose sum is σ = 18969600. Its totient is φ = 5927940.

The previous prime is 12251131. The next prime is 12251147. The reversal of 12251138 is 83115221.

It is a happy number.

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

It is a super-3 number, since 3×12251138³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12251131) 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, 98738 + ... + 98861.

It is an arithmetic number, because the mean of its divisors is an integer number (2371200).

Almost surely, 2^12251138 is an apocalyptic number.

12251138 is a deficient number, since it is larger than the sum of its proper divisors (6718462).

12251138 is a wasteful number, since it uses less digits than its factorization.

12251138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197632.

The product of its digits is 480, while the sum is 23.

The square root of 12251138 is about 3500.1625676531. The cubic root of 12251138 is about 230.5289527173.

Adding to 12251138 its reverse (83115221), we get a palindrome (95366359).

The spelling of 12251138 in words is "twelve million, two hundred fifty-one thousand, one hundred thirty-eight".