3402244040021 has 2 divisors, whose sum is σ = 3402244040022. Its totient is φ = 3402244040020.

The previous prime is 3402244040009. The next prime is 3402244040047. The reversal of 3402244040021 is 1200404422043.

It is a happy number.

It is an a-pointer prime, because the next prime (3402244040047) can be obtained adding 3402244040021 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849015246225 + 1553228793796 = 1359785^2 + 1246286^2 .

It is an emirp because it is prime and its reverse (1200404422043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3402244040021 - 2¹⁰ = 3402244038997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402244040821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701122020010 + 1701122020011.

It is an arithmetic number, because the mean of its divisors is an integer number (1701122020011).

Almost surely, 2^{3402244040021} is an apocalyptic number.

It is an amenable number.

3402244040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402244040021 is an equidigital number, since it uses as much as digits as its factorization.

3402244040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 3402244040021 its reverse (1200404422043), we get a palindrome (4602648462064).

The spelling of 3402244040021 in words is "three trillion, four hundred two billion, two hundred forty-four million, forty thousand, twenty-one".