221231023233023 has 4 divisors (see below), whose sum is σ = 221234464814088. Its totient is φ = 221227581651960.

The previous prime is 221231023233019. The next prime is 221231023233071. The reversal of 221231023233023 is 320332320132122.

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 221231023233023 - 2² = 221231023233019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221231023233083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720694108 + ... + 1720822673.

It is an arithmetic number, because the mean of its divisors is an integer number (55308616203522).

Almost surely, 2^{221231023233023} is an apocalyptic number.

221231023233023 is a deficient number, since it is larger than the sum of its proper divisors (3441581065).

221231023233023 is an equidigital number, since it uses as much as digits as its factorization.

221231023233023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441581064.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 221231023233023 its reverse (320332320132122), we get a palindrome (541563343365145).

The spelling of 221231023233023 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, twenty-three million, two hundred thirty-three thousand, twenty-three".