223032112021 has 4 divisors (see below), whose sum is σ = 227240265132. Its totient is φ = 218823958912.

The previous prime is 223032112019. The next prime is 223032112109. The reversal of 223032112021 is 120211230322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203644612900 + 19387499121 = 451270^2 + 139239^2 .

It is a cyclic number.

It is not a de Polignac number, because 223032112021 - 2¹ = 223032112019 is a prime.

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 223032112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223032122021) 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, 2104076476 + ... + 2104076581.

It is an arithmetic number, because the mean of its divisors is an integer number (56810066283).

Almost surely, 2^223032112021 is an apocalyptic number.

It is an amenable number.

223032112021 is a deficient number, since it is larger than the sum of its proper divisors (4208153111).

223032112021 is an equidigital number, since it uses as much as digits as its factorization.

223032112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208153110.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 223032112021 its reverse (120211230322), we get a palindrome (343243342343).

The spelling of 223032112021 in words is "two hundred twenty-three billion, thirty-two million, one hundred twelve thousand, twenty-one".