21232230127 has 2 divisors, whose sum is σ = 21232230128. Its totient is φ = 21232230126.

The previous prime is 21232230077. The next prime is 21232230133. The reversal of 21232230127 is 72103223212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21232230127 is a prime.

It is a super-2 number, since 2×21232230127² (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 (21232231127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616115063 + 10616115064.

It is an arithmetic number, because the mean of its divisors is an integer number (10616115064).

Almost surely, 2^21232230127 is an apocalyptic number.

21232230127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232230127 is an equidigital number, since it uses as much as digits as its factorization.

21232230127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 21232230127 its reverse (72103223212), we get a palindrome (93335453339).

The spelling of 21232230127 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirty thousand, one hundred twenty-seven".