1001222005 has 32 divisors (see below), whose sum is σ = 1458984960. Its totient is φ = 644293440.

The previous prime is 1001221999. The next prime is 1001222017. The reversal of 1001222005 is 5002221001.

It is not a de Polignac number, because 1001222005 - 2⁹ = 1001221493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64120 + ... + 78190.

It is an arithmetic number, because the mean of its divisors is an integer number (45593280).

Almost surely, 2^1001222005 is an apocalyptic number.

It is an amenable number.

1001222005 is a deficient number, since it is larger than the sum of its proper divisors (457762955).

1001222005 is a wasteful number, since it uses less digits than its factorization.

1001222005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14209.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1001222005 is about 31642.0922980766. The cubic root of 1001222005 is about 1000.4071691907.

Adding to 1001222005 its reverse (5002221001), we get a palindrome (6003443006).

The spelling of 1001222005 in words is "one billion, one million, two hundred twenty-two thousand, five".