12221392285 has 8 divisors (see below), whose sum is σ = 14800218840. Its totient is φ = 9687415104.

The previous prime is 12221392241. The next prime is 12221392289. The reversal of 12221392285 is 58229312221.

It can be written as a sum of positive squares in 4 ways, for example, as 4295229444 + 7926162841 = 65538^2 + 89029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221392285 - 2¹³ = 12221384093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221392289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11211742 + ... + 11212831.

It is an arithmetic number, because the mean of its divisors is an integer number (1850027355).

Almost surely, 2^12221392285 is an apocalyptic number.

It is an amenable number.

12221392285 is a deficient number, since it is larger than the sum of its proper divisors (2578826555).

12221392285 is a wasteful number, since it uses less digits than its factorization.

12221392285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22424687.

The product of its digits is 34560, while the sum is 37.

The spelling of 12221392285 in words is "twelve billion, two hundred twenty-one million, three hundred ninety-two thousand, two hundred eighty-five".