21432241141 has 2 divisors, whose sum is σ = 21432241142. Its totient is φ = 21432241140.

The previous prime is 21432241109. The next prime is 21432241147. The reversal of 21432241141 is 14114223412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17968330116 + 3463911025 = 134046^2 + 58855^2 .

It is a cyclic number.

It is not a de Polignac number, because 21432241141 - 2⁵ = 21432241109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21432241147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716120570 + 10716120571.

It is an arithmetic number, because the mean of its divisors is an integer number (10716120571).

Almost surely, 2^21432241141 is an apocalyptic number.

It is an amenable number.

21432241141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432241141 is an equidigital number, since it uses as much as digits as its factorization.

21432241141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

Adding to 21432241141 its reverse (14114223412), we get a palindrome (35546464553).

The spelling of 21432241141 in words is "twenty-one billion, four hundred thirty-two million, two hundred forty-one thousand, one hundred forty-one".