22221242047 has 2 divisors, whose sum is σ = 22221242048. Its totient is φ = 22221242046.

The previous prime is 22221242027. The next prime is 22221242081. The reversal of 22221242047 is 74024212222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22221242047 - 2²⁷ = 22087024319 is a prime.

It is a super-2 number, since 2×22221242047² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221242027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110621023 + 11110621024.

It is an arithmetic number, because the mean of its divisors is an integer number (11110621024).

Almost surely, 2^22221242047 is an apocalyptic number.

22221242047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221242047 is an equidigital number, since it uses as much as digits as its factorization.

22221242047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 28.

Adding to 22221242047 its reverse (74024212222), we get a palindrome (96245454269).

The spelling of 22221242047 in words is "twenty-two billion, two hundred twenty-one million, two hundred forty-two thousand, forty-seven".