21352525204223 has 2 divisors, whose sum is σ = 21352525204224. Its totient is φ = 21352525204222.

The previous prime is 21352525204207. The next prime is 21352525204243. The reversal of 21352525204223 is 32240252525312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21352525204223 - 2⁴ = 21352525204207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21352525204243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676262602111 + 10676262602112.

It is an arithmetic number, because the mean of its divisors is an integer number (10676262602112).

Almost surely, 2^{21352525204223} is an apocalyptic number.

21352525204223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21352525204223 is an equidigital number, since it uses as much as digits as its factorization.

21352525204223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 21352525204223 its reverse (32240252525312), we get a palindrome (53592777729535).

The spelling of 21352525204223 in words is "twenty-one trillion, three hundred fifty-two billion, five hundred twenty-five million, two hundred four thousand, two hundred twenty-three".