221311223023 has 8 divisors (see below), whose sum is σ = 241490785536. Its totient is φ = 201141720600.

The previous prime is 221311223017. The next prime is 221311223099. The reversal of 221311223023 is 320322113122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221311223023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221311222985 and 221311223003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311223923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2468983 + ... + 2557048.

It is an arithmetic number, because the mean of its divisors is an integer number (30186348192).

Almost surely, 2^221311223023 is an apocalyptic number.

221311223023 is a deficient number, since it is larger than the sum of its proper divisors (20179562513).

221311223023 is a wasteful number, since it uses less digits than its factorization.

221311223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030045.

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

Adding to 221311223023 its reverse (320322113122), we get a palindrome (541633336145).

The spelling of 221311223023 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred twenty-three thousand, twenty-three".