221333021023 has 4 divisors (see below), whose sum is σ = 221335824520. Its totient is φ = 221330217528.

The previous prime is 221333020999. The next prime is 221333021027. The reversal of 221333021023 is 320120333122.

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

It is a cyclic number.

It is not a de Polignac number, because 221333021023 - 2⁹ = 221333020511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221333020985 and 221333021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221333021027) 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, 1279788 + ... + 1442401.

It is an arithmetic number, because the mean of its divisors is an integer number (55333956130).

Almost surely, 2^221333021023 is an apocalyptic number.

221333021023 is a deficient number, since it is larger than the sum of its proper divisors (2803497).

221333021023 is an equidigital number, since it uses as much as digits as its factorization.

221333021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803496.

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

Adding to 221333021023 its reverse (320120333122), we get a palindrome (541453354145).

The spelling of 221333021023 in words is "two hundred twenty-one billion, three hundred thirty-three million, twenty-one thousand, twenty-three".