221320001123023 has 4 divisors (see below), whose sum is σ = 241440001225128. Its totient is φ = 201200001020920.

The previous prime is 221320001123009. The next prime is 221320001123059. The reversal of 221320001123023 is 320321100023122.

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

It is not a de Polignac number, because 221320001123023 - 2¹³ = 221320001114831 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221320001122985 and 221320001123003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221320001123093) 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, 10060000051036 + ... + 10060000051057.

It is an arithmetic number, because the mean of its divisors is an integer number (60360000306282).

Almost surely, 2^{221320001123023} is an apocalyptic number.

221320001123023 is a deficient number, since it is larger than the sum of its proper divisors (20120000102105).

221320001123023 is a wasteful number, since it uses less digits than its factorization.

221320001123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20120000102104.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221320001123023 its reverse (320321100023122), we get a palindrome (541641101146145).

The spelling of 221320001123023 in words is "two hundred twenty-one trillion, three hundred twenty billion, one million, one hundred twenty-three thousand, twenty-three".