12221265722 has 16 divisors (see below), whose sum is σ = 18501521472. Its totient is φ = 6054135360.

The previous prime is 12221265697. The next prime is 12221265737. The reversal of 12221265722 is 22756212221.

It is an unprimeable number.

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, 643097 + ... + 661827.

It is an arithmetic number, because the mean of its divisors is an integer number (1156345092).

Almost surely, 2^12221265722 is an apocalyptic number.

12221265722 is a deficient number, since it is larger than the sum of its proper divisors (6280255750).

12221265722 is a wasteful number, since it uses less digits than its factorization.

12221265722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21733.

The product of its digits is 13440, while the sum is 32.

Adding to 12221265722 its reverse (22756212221), we get a palindrome (34977477943).

The spelling of 12221265722 in words is "twelve billion, two hundred twenty-one million, two hundred sixty-five thousand, seven hundred twenty-two".