21342244444403 has 2 divisors, whose sum is σ = 21342244444404. Its totient is φ = 21342244444402.

The previous prime is 21342244444363. The next prime is 21342244444421. The reversal of 21342244444403 is 30444444224312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342244444403 - 2¹⁶ = 21342244378867 is a prime.

It is not a weakly prime, because it can be changed into another prime (21342244446403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671122222201 + 10671122222202.

It is an arithmetic number, because the mean of its divisors is an integer number (10671122222202).

Almost surely, 2^{21342244444403} is an apocalyptic number.

21342244444403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342244444403 is an equidigital number, since it uses as much as digits as its factorization.

21342244444403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1179648, while the sum is 41.

Adding to 21342244444403 its reverse (30444444224312), we get a palindrome (51786688668715).

The spelling of 21342244444403 in words is "twenty-one trillion, three hundred forty-two billion, two hundred forty-four million, four hundred forty-four thousand, four hundred three".