22423044203221 has 2 divisors, whose sum is σ = 22423044203222. Its totient is φ = 22423044203220.

The previous prime is 22423044203167. The next prime is 22423044203293. The reversal of 22423044203221 is 12230244032422.

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., 22400389739025 + 22654464196 = 4732905^2 + 150514^2 .

It is a cyclic number.

It is not a de Polignac number, because 22423044203221 - 2¹⁵ = 22423044170453 is a prime.

It is a super-2 number, since 2×22423044203221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22423044209221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11211522101610 + 11211522101611.

It is an arithmetic number, because the mean of its divisors is an integer number (11211522101611).

Almost surely, 2^{22423044203221} is an apocalyptic number.

It is an amenable number.

22423044203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22423044203221 is an equidigital number, since it uses as much as digits as its factorization.

22423044203221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 22423044203221 its reverse (12230244032422), we get a palindrome (34653288235643).

The spelling of 22423044203221 in words is "twenty-two trillion, four hundred twenty-three billion, forty-four million, two hundred three thousand, two hundred twenty-one".