2104244203421 has 2 divisors, whose sum is σ = 2104244203422. Its totient is φ = 2104244203420.

The previous prime is 2104244203387. The next prime is 2104244203427. The reversal of 2104244203421 is 1243024424012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620643572025 + 483600631396 = 1273045^2 + 695414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104244203421 - 2⁶ = 2104244203357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104244203427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052122101710 + 1052122101711.

It is an arithmetic number, because the mean of its divisors is an integer number (1052122101711).

Almost surely, 2^{2104244203421} is an apocalyptic number.

It is an amenable number.

2104244203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104244203421 is an equidigital number, since it uses as much as digits as its factorization.

2104244203421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2104244203421 its reverse (1243024424012), we get a palindrome (3347268627433).

The spelling of 2104244203421 in words is "two trillion, one hundred four billion, two hundred forty-four million, two hundred three thousand, four hundred twenty-one".