221102023 has 8 divisors (see below), whose sum is σ = 224505216. Its totient is φ = 217707000.

The previous prime is 221101981. The next prime is 221102027. The reversal of 221102023 is 320201122.

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

It is a cyclic number.

It is not a de Polignac number, because 221102023 - 2⁹ = 221101511 is a prime.

It is a super-2 number, since 2×221102023² = 97772209149385058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221101994 and 221102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73140 + ... + 76102.

It is an arithmetic number, because the mean of its divisors is an integer number (28063152).

Almost surely, 2^221102023 is an apocalyptic number.

221102023 is a deficient number, since it is larger than the sum of its proper divisors (3403193).

221102023 is a wasteful number, since it uses less digits than its factorization.

221102023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221102023 is about 14869.4997562124. The cubic root of 221102023 is about 604.6873807793.

Adding to 221102023 its reverse (320201122), we get a palindrome (541303145).

Subtracting 221102023 from its reverse (320201122), we obtain a palindrome (99099099).

The spelling of 221102023 in words is "two hundred twenty-one million, one hundred two thousand, twenty-three".