21232220183 has 2 divisors, whose sum is σ = 21232220184. Its totient is φ = 21232220182.

The previous prime is 21232220071. The next prime is 21232220257. The reversal of 21232220183 is 38102223212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232220183 - 2¹⁸ = 21231958039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232280183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616110091 + 10616110092.

It is an arithmetic number, because the mean of its divisors is an integer number (10616110092).

Almost surely, 2^21232220183 is an apocalyptic number.

21232220183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232220183 is an equidigital number, since it uses as much as digits as its factorization.

21232220183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21232220183 its reverse (38102223212), we get a palindrome (59334443395).

The spelling of 21232220183 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty thousand, one hundred eighty-three".