1002341231921 has 2 divisors, whose sum is σ = 1002341231922. Its totient is φ = 1002341231920.

The previous prime is 1002341231891. The next prime is 1002341231959. The reversal of 1002341231921 is 1291321432001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976173640225 + 26167591696 = 988015^2 + 161764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002341231921 - 2³⁴ = 985161362737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002341231621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501170615960 + 501170615961.

It is an arithmetic number, because the mean of its divisors is an integer number (501170615961).

Almost surely, 2^{1002341231921} is an apocalyptic number.

It is an amenable number.

1002341231921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002341231921 is an equidigital number, since it uses as much as digits as its factorization.

1002341231921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1002341231921 its reverse (1291321432001), we get a palindrome (2293662663922).

The spelling of 1002341231921 in words is "one trillion, two billion, three hundred forty-one million, two hundred thirty-one thousand, nine hundred twenty-one".