12440231211 has 16 divisors (see below), whose sum is σ = 17180513280. Its totient is φ = 7998545760.

The previous prime is 12440231203. The next prime is 12440231227. The reversal of 12440231211 is 11213204421.

It is not a de Polignac number, because 12440231211 - 2³ = 12440231203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12440231411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201021 + ... + 255518.

It is an arithmetic number, because the mean of its divisors is an integer number (1073782080).

Almost surely, 2^12440231211 is an apocalyptic number.

12440231211 is a deficient number, since it is larger than the sum of its proper divisors (4740282069).

12440231211 is a wasteful number, since it uses less digits than its factorization.

12440231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456866.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12440231211 its reverse (11213204421), we get a palindrome (23653435632).

The spelling of 12440231211 in words is "twelve billion, four hundred forty million, two hundred thirty-one thousand, two hundred eleven".