22454144261 has 2 divisors, whose sum is σ = 22454144262. Its totient is φ = 22454144260.

The previous prime is 22454144189. The next prime is 22454144267. The reversal of 22454144261 is 16244145422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19180588036 + 3273556225 = 138494^2 + 57215^2 .

It is a cyclic number.

It is not a de Polignac number, because 22454144261 - 2¹⁰ = 22454143237 is a prime.

It is a super-2 number, since 2×22454144261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22454144267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11227072130 + 11227072131.

It is an arithmetic number, because the mean of its divisors is an integer number (11227072131).

Almost surely, 2^22454144261 is an apocalyptic number.

It is an amenable number.

22454144261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22454144261 is an equidigital number, since it uses as much as digits as its factorization.

22454144261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 35.

Adding to 22454144261 its reverse (16244145422), we get a palindrome (38698289683).

The spelling of 22454144261 in words is "twenty-two billion, four hundred fifty-four million, one hundred forty-four thousand, two hundred sixty-one".