221301223020233 has 4 divisors (see below), whose sum is σ = 221301254199828. Its totient is φ = 221301191840640.

The previous prime is 221301223020169. The next prime is 221301223020239. The reversal of 221301223020233 is 332020322103122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 213632045448649 + 7669177571584 = 14616157^2 + 2769328^2 .

It is a cyclic number.

It is not a de Polignac number, because 221301223020233 - 2⁶ = 221301223020169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221301223020239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800885 + ... + 21053357.

It is an arithmetic number, because the mean of its divisors is an integer number (55325313549957).

Almost surely, 2^{221301223020233} is an apocalyptic number.

It is an amenable number.

221301223020233 is a deficient number, since it is larger than the sum of its proper divisors (31179595).

221301223020233 is a wasteful number, since it uses less digits than its factorization.

221301223020233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31179594.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 221301223020233 its reverse (332020322103122), we get a palindrome (553321545123355).

The spelling of 221301223020233 in words is "two hundred twenty-one trillion, three hundred one billion, two hundred twenty-three million, twenty thousand, two hundred thirty-three".