12221642230065 has 12 divisors (see below), whose sum is σ = 21184179865524. Its totient is φ = 6518209189344.

The previous prime is 12221642230051. The next prime is 12221642230093. The reversal of 12221642230065 is 56003224612221.

12221642230065 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 642 + 2 + 3 + 0 + 0 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1859140431009 + 10362501799056 = 1363503^2 + 3219084^2 .

It is not a de Polignac number, because 12221642230065 - 2²¹ = 12221640132913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135796024734 + ... + 135796024823.

It is an arithmetic number, because the mean of its divisors is an integer number (1765348322127).

Almost surely, 2^{12221642230065} is an apocalyptic number.

12221642230065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12221642230065 is a deficient number, since it is larger than the sum of its proper divisors (8962537635459).

12221642230065 is a wasteful number, since it uses less digits than its factorization.

12221642230065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271592049568 (or 271592049565 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12221642230065 its reverse (56003224612221), we get a palindrome (68224866842286).

The spelling of 12221642230065 in words is "twelve trillion, two hundred twenty-one billion, six hundred forty-two million, two hundred thirty thousand, sixty-five".