22144211021 has 2 divisors, whose sum is σ = 22144211022. Its totient is φ = 22144211020.

The previous prime is 22144210961. The next prime is 22144211027. The reversal of 22144211021 is 12011244122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13117120900 + 9027090121 = 114530^2 + 95011^2 .

It is a cyclic number.

It is not a de Polignac number, because 22144211021 - 2¹⁴ = 22144194637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22144210984 and 22144211002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22144211027) 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, 11072105510 + 11072105511.

It is an arithmetic number, because the mean of its divisors is an integer number (11072105511).

Almost surely, 2^22144211021 is an apocalyptic number.

It is an amenable number.

22144211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144211021 is an equidigital number, since it uses as much as digits as its factorization.

22144211021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22144211021 its reverse (12011244122), we get a palindrome (34155455143).

The spelling of 22144211021 in words is "twenty-two billion, one hundred forty-four million, two hundred eleven thousand, twenty-one".