12221495 has 16 divisors (see below), whose sum is σ = 17230752. Its totient is φ = 8204160.

The previous prime is 12221491. The next prime is 12221497. The reversal of 12221495 is 59412221.

It is not a de Polignac number, because 12221495 - 2² = 12221491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221491) 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, 7832 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (1076922).

Almost surely, 2^12221495 is an apocalyptic number.

12221495 is a deficient number, since it is larger than the sum of its proper divisors (5009257).

12221495 is a wasteful number, since it uses less digits than its factorization.

12221495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17122.

The product of its digits is 1440, while the sum is 26.

The square root of 12221495 is about 3495.9254854759. The cubic root of 12221495 is about 230.3428723522.

The spelling of 12221495 in words is "twelve million, two hundred twenty-one thousand, four hundred ninety-five".