22444334453221 has 2 divisors, whose sum is σ = 22444334453222. Its totient is φ = 22444334453220.

The previous prime is 22444334453171. The next prime is 22444334453249. The reversal of 22444334453221 is 12235443344422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19926305004321 + 2518029448900 = 4463889^2 + 1586830^2 .

It is a cyclic number.

It is not a de Polignac number, because 22444334453221 - 2²⁷ = 22444200235493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22444334453291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11222167226610 + 11222167226611.

It is an arithmetic number, because the mean of its divisors is an integer number (11222167226611).

Almost surely, 2^{22444334453221} is an apocalyptic number.

It is an amenable number.

22444334453221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22444334453221 is an equidigital number, since it uses as much as digits as its factorization.

22444334453221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 43.

Adding to 22444334453221 its reverse (12235443344422), we get a palindrome (34679777797643).

The spelling of 22444334453221 in words is "twenty-two trillion, four hundred forty-four billion, three hundred thirty-four million, four hundred fifty-three thousand, two hundred twenty-one".