1002002021263 has 2 divisors, whose sum is σ = 1002002021264. Its totient is φ = 1002002021262.

The previous prime is 1002002021183. The next prime is 1002002021281. The reversal of 1002002021263 is 3621202002001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002002021263 - 2²¹ = 1001999924111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002002021263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002002091263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501001010631 + 501001010632.

It is an arithmetic number, because the mean of its divisors is an integer number (501001010632).

Almost surely, 2^{1002002021263} is an apocalyptic number.

1002002021263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002021263 is an equidigital number, since it uses as much as digits as its factorization.

1002002021263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1002002021263 its reverse (3621202002001), we get a palindrome (4623204023264).

The spelling of 1002002021263 in words is "one trillion, two billion, two million, twenty-one thousand, two hundred sixty-three".