12271402 has 32 divisors (see below), whose sum is σ = 21881664. Its totient is φ = 5088000.

The previous prime is 12271349. The next prime is 12271403. The reversal of 12271402 is 20417221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12271402.

It is not an unprimeable number, because it can be changed into a prime (12271403) 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, 30402 + ... + 30802.

It is an arithmetic number, because the mean of its divisors is an integer number (683802).

Almost surely, 2^12271402 is an apocalyptic number.

12271402 is a deficient number, since it is larger than the sum of its proper divisors (9610262).

12271402 is a wasteful number, since it uses less digits than its factorization.

12271402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12271402 is about 3503.0560943268. The cubic root of 12271402 is about 230.6559848744.

Adding to 12271402 its reverse (20417221), we get a palindrome (32688623).

The spelling of 12271402 in words is "twelve million, two hundred seventy-one thousand, four hundred two".