21442023394223 has 2 divisors, whose sum is σ = 21442023394224. Its totient is φ = 21442023394222.

The previous prime is 21442023394201. The next prime is 21442023394237. The reversal of 21442023394223 is 32249332024412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21442023394223 - 2¹⁰ = 21442023393199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21442022394223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721011697111 + 10721011697112.

It is an arithmetic number, because the mean of its divisors is an integer number (10721011697112).

Almost surely, 2^{21442023394223} is an apocalyptic number.

21442023394223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442023394223 is an equidigital number, since it uses as much as digits as its factorization.

21442023394223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 21442023394223 in words is "twenty-one trillion, four hundred forty-two billion, twenty-three million, three hundred ninety-four thousand, two hundred twenty-three".