223332310021 has 4 divisors (see below), whose sum is σ = 223407941932. Its totient is φ = 223256678112.

The previous prime is 223332310013. The next prime is 223332310027. The reversal of 223332310021 is 120013233322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120013233322 = 2 ⋅60006616661.

It can be written as a sum of positive squares in 2 ways, for example, as 94716833121 + 128615476900 = 307761^2 + 358630^2 .

It is a cyclic number.

It is not a de Polignac number, because 223332310021 - 2³ = 223332310013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223332309974 and 223332310001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223332310027) 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, 37811526 + ... + 37817431.

It is an arithmetic number, because the mean of its divisors is an integer number (55851985483).

Almost surely, 2^223332310021 is an apocalyptic number.

It is an amenable number.

223332310021 is a deficient number, since it is larger than the sum of its proper divisors (75631911).

223332310021 is an equidigital number, since it uses as much as digits as its factorization.

223332310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75631910.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 223332310021 its reverse (120013233322), we get a palindrome (343345543343).

The spelling of 223332310021 in words is "two hundred twenty-three billion, three hundred thirty-two million, three hundred ten thousand, twenty-one".