221011323222023 has 4 divisors (see below), whose sum is σ = 221270422077768. Its totient is φ = 220752224366280.

The previous prime is 221011323221957. The next prime is 221011323222031. The reversal of 221011323222023 is 320222323110122.

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 221011323222023 - 2¹⁰ = 221011323220999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221011323221983 and 221011323222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011323225023) 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, 129549426593 + ... + 129549428298.

It is an arithmetic number, because the mean of its divisors is an integer number (55317605519442).

Almost surely, 2^{221011323222023} is an apocalyptic number.

221011323222023 is a deficient number, since it is larger than the sum of its proper divisors (259098855745).

221011323222023 is an equidigital number, since it uses as much as digits as its factorization.

221011323222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259098855744.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221011323222023 its reverse (320222323110122), we get a palindrome (541233646332145).

The spelling of 221011323222023 in words is "two hundred twenty-one trillion, eleven billion, three hundred twenty-three million, two hundred twenty-two thousand, twenty-three".