12257811 has 20 divisors (see below), whose sum is σ = 18762744. Its totient is φ = 7970400.

The previous prime is 12257809. The next prime is 12257821. The reversal of 12257811 is 11875221.

It is not a de Polignac number, because 12257811 - 2¹ = 12257809 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12257821) 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 19 ways as a sum of consecutive naturals, for example, 1476 + ... + 5166.

Almost surely, 2^12257811 is an apocalyptic number.

12257811 is a deficient number, since it is larger than the sum of its proper divisors (6504933).

12257811 is an equidigital number, since it uses as much as digits as its factorization.

12257811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744 (or 3735 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 12257811 is about 3501.1156793228. The cubic root of 12257811 is about 230.5708002715.

The spelling of 12257811 in words is "twelve million, two hundred fifty-seven thousand, eight hundred eleven".