22001222144441 has 2 divisors, whose sum is σ = 22001222144442. Its totient is φ = 22001222144440.

The previous prime is 22001222144423. The next prime is 22001222144477. The reversal of 22001222144441 is 14444122210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12632088847225 + 9369133297216 = 3554165^2 + 3060904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001222144441 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001222144411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000611072220 + 11000611072221.

It is an arithmetic number, because the mean of its divisors is an integer number (11000611072221).

Almost surely, 2^{22001222144441} is an apocalyptic number.

It is an amenable number.

22001222144441 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001222144441 is an equidigital number, since it uses as much as digits as its factorization.

22001222144441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 22001222144441 its reverse (14444122210022), we get a palindrome (36445344354463).

The spelling of 22001222144441 in words is "twenty-two trillion, one billion, two hundred twenty-two million, one hundred forty-four thousand, four hundred forty-one".