221302231023 has 16 divisors (see below), whose sum is σ = 303058563680. Its totient is φ = 143540729856.

The previous prime is 221302231009. The next prime is 221302231109. The reversal of 221302231023 is 320132203122.

It is a happy number.

It is not a de Polignac number, because 221302231023 - 2⁹ = 221302230511 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 (221302231223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3759111 + ... + 3817527.

It is an arithmetic number, because the mean of its divisors is an integer number (18941160230).

Almost surely, 2^221302231023 is an apocalyptic number.

221302231023 is a deficient number, since it is larger than the sum of its proper divisors (81756332657).

221302231023 is a wasteful number, since it uses less digits than its factorization.

221302231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92586.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221302231023 its reverse (320132203122), we get a palindrome (541434434145).

The spelling of 221302231023 in words is "two hundred twenty-one billion, three hundred two million, two hundred thirty-one thousand, twenty-three".