223323333021 has 12 divisors (see below), whose sum is σ = 322846754620. Its totient is φ = 148758249600.

The previous prime is 223323333011. The next prime is 223323333041. The reversal of 223323333021 is 120333323322.

223323333021 is a `hidden beast` number, since 2 + 2 + 3 + 323 + 3 + 330 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 113172360921 + 110150972100 = 336411^2 + 331890^2 .

It is not a de Polignac number, because 223323333021 - 2¹⁰ = 223323331997 is a prime.

It is a super-2 number, since 2×223323333021² (a number of 23 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 (223323333011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10319626 + ... + 10341243.

Almost surely, 2^223323333021 is an apocalyptic number.

It is an amenable number.

223323333021 is a deficient number, since it is larger than the sum of its proper divisors (99523421599).

223323333021 is a wasteful number, since it uses less digits than its factorization.

223323333021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662076 (or 20662073 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 27.

Adding to 223323333021 its reverse (120333323322), we get a palindrome (343656656343).

The spelling of 223323333021 in words is "two hundred twenty-three billion, three hundred twenty-three million, three hundred thirty-three thousand, twenty-one".