1002101999 has 2 divisors, whose sum is σ = 1002102000. Its totient is φ = 1002101998.

The previous prime is 1002101963. The next prime is 1002102041. The reversal of 1002101999 is 9991012001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002101999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002151999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050999 + 501051000.

It is an arithmetic number, because the mean of its divisors is an integer number (501051000).

Almost surely, 2^1002101999 is an apocalyptic number.

1002101999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002101999 is an equidigital number, since it uses as much as digits as its factorization.

1002101999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 1002101999 is about 31655.9946771540. The cubic root of 1002101999 is about 1000.7001759725.

The spelling of 1002101999 in words is "one billion, two million, one hundred one thousand, nine hundred ninety-nine".