1005222221605 has 16 divisors (see below), whose sum is σ = 1378930475520. Its totient is φ = 689125237632.

The previous prime is 1005222221573. The next prime is 1005222221611. The reversal of 1005222221605 is 5061222225001.

It is a cyclic number.

It is not a de Polignac number, because 1005222221605 - 2⁵ = 1005222221573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3397645 + ... + 3681634.

It is an arithmetic number, because the mean of its divisors is an integer number (86183154720).

Almost surely, 2^{1005222221605} is an apocalyptic number.

It is an amenable number.

1005222221605 is a deficient number, since it is larger than the sum of its proper divisors (373708253915).

1005222221605 is an equidigital number, since it uses as much as digits as its factorization.

1005222221605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083348.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1005222221605 its reverse (5061222225001), we get a palindrome (6066444446606).

The spelling of 1005222221605 in words is "one trillion, five billion, two hundred twenty-two million, two hundred twenty-one thousand, six hundred five".