22221142543 has 2 divisors, whose sum is σ = 22221142544. Its totient is φ = 22221142542.

The previous prime is 22221142511. The next prime is 22221142571. The reversal of 22221142543 is 34524112222.

It is an a-pointer prime, because the next prime (22221142571) can be obtained adding 22221142543 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221142543 - 2⁵ = 22221142511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221142243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110571271 + 11110571272.

It is an arithmetic number, because the mean of its divisors is an integer number (11110571272).

Almost surely, 2^22221142543 is an apocalyptic number.

22221142543 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221142543 is an equidigital number, since it uses as much as digits as its factorization.

22221142543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 28.

Adding to 22221142543 its reverse (34524112222), we get a palindrome (56745254765).

The spelling of 22221142543 in words is "twenty-two billion, two hundred twenty-one million, one hundred forty-two thousand, five hundred forty-three".