1002210091 has 2 divisors, whose sum is σ = 1002210092. Its totient is φ = 1002210090.

The previous prime is 1002210089. The next prime is 1002210113. The reversal of 1002210091 is 1900122001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002210091 - 2¹ = 1002210089 is a prime.

Together with 1002210089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1002210031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501105045 + 501105046.

It is an arithmetic number, because the mean of its divisors is an integer number (501105046).

Almost surely, 2^1002210091 is an apocalyptic number.

1002210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002210091 is an equidigital number, since it uses as much as digits as its factorization.

1002210091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1002210091 is about 31657.7019222811. The cubic root of 1002210091 is about 1000.7361549429.

Adding to 1002210091 its reverse (1900122001), we get a palindrome (2902332092).

The spelling of 1002210091 in words is "one billion, two million, two hundred ten thousand, ninety-one".