223231010021 has 8 divisors (see below), whose sum is σ = 228734753688. Its totient is φ = 217730080000.

The previous prime is 223231009999. The next prime is 223231010027. The reversal of 223231010021 is 120010132322.

It can be written as a sum of positive squares in 4 ways, for example, as 1659340225 + 221571669796 = 40735^2 + 470714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223231010021 - 2²² = 223226815717 is a prime.

It is a super-3 number, since 3×223231010021³ (a number of 35 digits) contains 333 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 (223231010027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542330 + ... + 860571.

It is an arithmetic number, because the mean of its divisors is an integer number (28591844211).

Almost surely, 2^223231010021 is an apocalyptic number.

It is an amenable number.

223231010021 is a deficient number, since it is larger than the sum of its proper divisors (5503743667).

223231010021 is a wasteful number, since it uses less digits than its factorization.

223231010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406823.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 223231010021 its reverse (120010132322), we get a palindrome (343241142343).

The spelling of 223231010021 in words is "two hundred twenty-three billion, two hundred thirty-one million, ten thousand, twenty-one".