2221227613 has 12 divisors (see below), whose sum is σ = 2451049020. Its totient is φ = 2011412480.

The previous prime is 2221227611. The next prime is 2221227641. The reversal of 2221227613 is 3167221222.

2221227613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1130775129 + 1090452484 = 33627^2 + 33022^2 .

It is not a de Polignac number, because 2221227613 - 2¹ = 2221227611 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 (2221227611) 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, 4618 + ... + 66811.

It is an arithmetic number, because the mean of its divisors is an integer number (204254085).

Almost surely, 2^2221227613 is an apocalyptic number.

It is an amenable number.

2221227613 is a deficient number, since it is larger than the sum of its proper divisors (229821407).

2221227613 is a wasteful number, since it uses less digits than its factorization.

2221227613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71708 (or 71697 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2221227613 is about 47129.9014745416. The cubic root of 2221227613 is about 1304.7611631636.

Adding to 2221227613 its reverse (3167221222), we get a palindrome (5388448835).

The spelling of 2221227613 in words is "two billion, two hundred twenty-one million, two hundred twenty-seven thousand, six hundred thirteen".