1002412442021 has 2 divisors, whose sum is σ = 1002412442022. Its totient is φ = 1002412442020.

The previous prime is 1002412441999. The next prime is 1002412442023. The reversal of 1002412442021 is 1202442142001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 979676325796 + 22736116225 = 989786^2 + 150785^2 .

It is an emirp because it is prime and its reverse (1202442142001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002412442021 is a prime.

Together with 1002412442023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002412442023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501206221010 + 501206221011.

It is an arithmetic number, because the mean of its divisors is an integer number (501206221011).

Almost surely, 2^{1002412442021} is an apocalyptic number.

It is an amenable number.

1002412442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002412442021 is an equidigital number, since it uses as much as digits as its factorization.

1002412442021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1002412442021 its reverse (1202442142001), we get a palindrome (2204854584022).

The spelling of 1002412442021 in words is "one trillion, two billion, four hundred twelve million, four hundred forty-two thousand, twenty-one".