21330010223 has 16 divisors (see below), whose sum is σ = 22870944000. Its totient is φ = 19832041152.

The previous prime is 21330010217. The next prime is 21330010259. The reversal of 21330010223 is 32201003312.

It is a cyclic number.

It is not a de Polignac number, because 21330010223 - 2¹⁶ = 21329944687 is a prime.

It is a super-2 number, since 2×21330010223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330010283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676238 + ... + 707076.

It is an arithmetic number, because the mean of its divisors is an integer number (1429434000).

Almost surely, 2^21330010223 is an apocalyptic number.

21330010223 is a deficient number, since it is larger than the sum of its proper divisors (1540933777).

21330010223 is a wasteful number, since it uses less digits than its factorization.

21330010223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31534.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21330010223 its reverse (32201003312), we get a palindrome (53531013535).

The spelling of 21330010223 in words is "twenty-one billion, three hundred thirty million, ten thousand, two hundred twenty-three".