221112220323 has 4 divisors (see below), whose sum is σ = 294816293768. Its totient is φ = 147408146880.

The previous prime is 221112220319. The next prime is 221112220327. The reversal of 221112220323 is 323022211122.

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

It is an interprime number because it is at equal distance from previous prime (221112220319) and next prime (221112220327).

It is not a de Polignac number, because 221112220323 - 2² = 221112220319 is a prime.

It is a super-2 number, since 2×221112220323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221112220323.

It is not an unprimeable number, because it can be changed into a prime (221112220327) 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, 36852036718 + ... + 36852036723.

It is an arithmetic number, because the mean of its divisors is an integer number (73704073442).

Almost surely, 2^221112220323 is an apocalyptic number.

221112220323 is a deficient number, since it is larger than the sum of its proper divisors (73704073445).

221112220323 is an equidigital number, since it uses as much as digits as its factorization.

221112220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73704073444.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221112220323 its reverse (323022211122), we get a palindrome (544134431445).

The spelling of 221112220323 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, three hundred twenty-three".