22118143 has 2 divisors, whose sum is σ = 22118144. Its totient is φ = 22118142.

The previous prime is 22118123. The next prime is 22118149. The reversal of 22118143 is 34181122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22118143 - 2¹³ = 22109951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22118149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11059071 + 11059072.

It is an arithmetic number, because the mean of its divisors is an integer number (11059072).

Almost surely, 2^22118143 is an apocalyptic number.

22118143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22118143 is an equidigital number, since it uses as much as digits as its factorization.

22118143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

The square root of 22118143 is about 4702.9929831970. The cubic root of 22118143 is about 280.7046156643.

Adding to 22118143 its reverse (34181122), we get a palindrome (56299265).

The spelling of 22118143 in words is "twenty-two million, one hundred eighteen thousand, one hundred forty-three".