12251611 has 4 divisors (see below), whose sum is σ = 12972312. Its totient is φ = 11530912.

The previous prime is 12251609. The next prime is 12251623. The reversal of 12251611 is 11615221.

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 12251611 - 2¹ = 12251609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12251641) 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, 360325 + ... + 360358.

It is an arithmetic number, because the mean of its divisors is an integer number (3243078).

Almost surely, 2^12251611 is an apocalyptic number.

12251611 is a deficient number, since it is larger than the sum of its proper divisors (720701).

12251611 is an equidigital number, since it uses as much as digits as its factorization.

12251611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720700.

The product of its digits is 120, while the sum is 19.

The square root of 12251611 is about 3500.2301352911. The cubic root of 12251611 is about 230.5319194836.

Adding to 12251611 its reverse (11615221), we get a palindrome (23866832).

The spelling of 12251611 in words is "twelve million, two hundred fifty-one thousand, six hundred eleven".