12221044623 has 12 divisors (see below), whose sum is σ = 17709022240. Its totient is φ = 8121331296.

The previous prime is 12221044621. The next prime is 12221044637. The reversal of 12221044623 is 32644012221.

12221044623 is a `hidden beast` number, since 1 + 2 + 2 + 210 + 446 + 2 + 3 = 666.

It is not a de Polignac number, because 12221044623 - 2¹ = 12221044621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221044621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2166343 + ... + 2171976.

Almost surely, 2^12221044623 is an apocalyptic number.

12221044623 is a deficient number, since it is larger than the sum of its proper divisors (5487977617).

12221044623 is a wasteful number, since it uses less digits than its factorization.

12221044623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338638 (or 4338635 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12221044623 its reverse (32644012221), we get a palindrome (44865056844).

The spelling of 12221044623 in words is "twelve billion, two hundred twenty-one million, forty-four thousand, six hundred twenty-three".