1002001020023 has 2 divisors, whose sum is σ = 1002001020024. Its totient is φ = 1002001020022.

The previous prime is 1002001019983. The next prime is 1002001020047. The reversal of 1002001020023 is 3200201002001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002001020023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002001019986 and 1002001020013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002001022023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000510011 + 501000510012.

It is an arithmetic number, because the mean of its divisors is an integer number (501000510012).

Almost surely, 2^{1002001020023} is an apocalyptic number.

1002001020023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001020023 is an equidigital number, since it uses as much as digits as its factorization.

1002001020023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 1002001020023 its reverse (3200201002001), we get a palindrome (4202202022024).

The spelling of 1002001020023 in words is "one trillion, two billion, one million, twenty thousand, twenty-three".