21532000223 has 2 divisors, whose sum is σ = 21532000224. Its totient is φ = 21532000222.

The previous prime is 21532000219. The next prime is 21532000253. The reversal of 21532000223 is 32200023512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21532000223 - 2² = 21532000219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21532000195 and 21532000204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21532000253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10766000111 + 10766000112.

It is an arithmetic number, because the mean of its divisors is an integer number (10766000112).

Almost surely, 2^21532000223 is an apocalyptic number.

21532000223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21532000223 is an equidigital number, since it uses as much as digits as its factorization.

21532000223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 21532000223 its reverse (32200023512), we get a palindrome (53732023735).

The spelling of 21532000223 in words is "twenty-one billion, five hundred thirty-two million, two hundred twenty-three", and thus it is an aban number.