21212241143 has 2 divisors, whose sum is σ = 21212241144. Its totient is φ = 21212241142.

The previous prime is 21212241091. The next prime is 21212241163. The reversal of 21212241143 is 34114221212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21212241143 - 2²⁰ = 21211192567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21212241163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606120571 + 10606120572.

It is an arithmetic number, because the mean of its divisors is an integer number (10606120572).

Almost surely, 2^21212241143 is an apocalyptic number.

21212241143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212241143 is an equidigital number, since it uses as much as digits as its factorization.

21212241143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

Adding to 21212241143 its reverse (34114221212), we get a palindrome (55326462355).

The spelling of 21212241143 in words is "twenty-one billion, two hundred twelve million, two hundred forty-one thousand, one hundred forty-three".