22221323209973 has 2 divisors, whose sum is σ = 22221323209974. Its totient is φ = 22221323209972.

The previous prime is 22221323209963. The next prime is 22221323210087. The reversal of 22221323209973 is 37990232312222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13291398273169 + 8929924936804 = 3645737^2 + 2988298^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221323209973 - 2¹⁸ = 22221322947829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221323209963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110661604986 + 11110661604987.

It is an arithmetic number, because the mean of its divisors is an integer number (11110661604987).

Almost surely, 2^{22221323209973} is an apocalyptic number.

It is an amenable number.

22221323209973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221323209973 is an equidigital number, since it uses as much as digits as its factorization.

22221323209973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 22221323209973 in words is "twenty-two trillion, two hundred twenty-one billion, three hundred twenty-three million, two hundred nine thousand, nine hundred seventy-three".