22221849841 has 2 divisors, whose sum is σ = 22221849842. Its totient is φ = 22221849840.

The previous prime is 22221849833. The next prime is 22221849889. The reversal of 22221849841 is 14894812222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13664674816 + 8557175025 = 116896^2 + 92505^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221849841 - 2³ = 22221849833 is a prime.

It is a super-2 number, since 2×22221849841² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22221849341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110924920 + 11110924921.

It is an arithmetic number, because the mean of its divisors is an integer number (11110924921).

Almost surely, 2^22221849841 is an apocalyptic number.

It is an amenable number.

22221849841 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221849841 is an equidigital number, since it uses as much as digits as its factorization.

22221849841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 43.

The spelling of 22221849841 in words is "twenty-two billion, two hundred twenty-one million, eight hundred forty-nine thousand, eight hundred forty-one".