1001033221087 has 2 divisors, whose sum is σ = 1001033221088. Its totient is φ = 1001033221086.

The previous prime is 1001033221063. The next prime is 1001033221117. The reversal of 1001033221087 is 7801223301001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001033221087 - 2⁷ = 1001033220959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001033261087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500516610543 + 500516610544.

It is an arithmetic number, because the mean of its divisors is an integer number (500516610544).

Almost surely, 2^{1001033221087} is an apocalyptic number.

1001033221087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001033221087 is an equidigital number, since it uses as much as digits as its factorization.

1001033221087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 1001033221087 its reverse (7801223301001), we get a palindrome (8802256522088).

The spelling of 1001033221087 in words is "one trillion, one billion, thirty-three million, two hundred twenty-one thousand, eighty-seven".