23032111212221 has 4 divisors (see below), whose sum is σ = 23032596749244. Its totient is φ = 23031625675200.

The previous prime is 23032111212217. The next prime is 23032111212241. The reversal of 23032111212221 is 12221211123032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7087575062500 + 15944536149721 = 2662250^2 + 3993061^2 .

It is a cyclic number.

It is not a de Polignac number, because 23032111212221 - 2² = 23032111212217 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 (23032111212241) 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, 242697350 + ... + 242792231.

It is an arithmetic number, because the mean of its divisors is an integer number (5758149187311).

Almost surely, 2^{23032111212221} is an apocalyptic number.

It is an amenable number.

23032111212221 is a deficient number, since it is larger than the sum of its proper divisors (485537023).

23032111212221 is an equidigital number, since it uses as much as digits as its factorization.

23032111212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485537022.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 23032111212221 its reverse (12221211123032), we get a palindrome (35253322335253).

The spelling of 23032111212221 in words is "twenty-three trillion, thirty-two billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-one".