223255332021 has 4 divisors (see below), whose sum is σ = 297673776032. Its totient is φ = 148836888012.

The previous prime is 223255332007. The next prime is 223255332023. The reversal of 223255332021 is 120233552322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 223255332021 - 2¹⁰ = 223255330997 is a prime.

It is a super-3 number, since 3×223255332021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223255332021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223255332023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37209222001 + ... + 37209222006.

It is an arithmetic number, because the mean of its divisors is an integer number (74418444008).

Almost surely, 2^223255332021 is an apocalyptic number.

It is an amenable number.

223255332021 is a deficient number, since it is larger than the sum of its proper divisors (74418444011).

223255332021 is an equidigital number, since it uses as much as digits as its factorization.

223255332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74418444010.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 223255332021 its reverse (120233552322), we get a palindrome (343488884343).

The spelling of 223255332021 in words is "two hundred twenty-three billion, two hundred fifty-five million, three hundred thirty-two thousand, twenty-one".