21152350522223 has 2 divisors, whose sum is σ = 21152350522224. Its totient is φ = 21152350522222.

The previous prime is 21152350522159. The next prime is 21152350522249. The reversal of 21152350522223 is 32222505325112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21152350522223 - 2⁶ = 21152350522159 is a prime.

It is a super-2 number, since 2×21152350522223² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21152350522423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576175261111 + 10576175261112.

It is an arithmetic number, because the mean of its divisors is an integer number (10576175261112).

Almost surely, 2^{21152350522223} is an apocalyptic number.

21152350522223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21152350522223 is an equidigital number, since it uses as much as digits as its factorization.

21152350522223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 21152350522223 its reverse (32222505325112), we get a palindrome (53374855847335).

The spelling of 21152350522223 in words is "twenty-one trillion, one hundred fifty-two billion, three hundred fifty million, five hundred twenty-two thousand, two hundred twenty-three".