201111223 has 4 divisors (see below), whose sum is σ = 201142800. Its totient is φ = 201079648.

The previous prime is 201111221. The next prime is 201111227. The reversal of 201111223 is 322111102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322111102 = 2 ⋅161055551.

It is a cyclic number.

It is not a de Polignac number, because 201111223 - 2¹ = 201111221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111221) 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, 2515 + ... + 20212.

It is an arithmetic number, because the mean of its divisors is an integer number (50285700).

Almost surely, 2^201111223 is an apocalyptic number.

201111223 is a deficient number, since it is larger than the sum of its proper divisors (31577).

201111223 is an equidigital number, since it uses as much as digits as its factorization.

201111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31576.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201111223 is about 14181.3688690479. The cubic root of 201111223 is about 585.8846264961.

Adding to 201111223 its reverse (322111102), we get a palindrome (523222325).

The spelling of 201111223 in words is "two hundred one million, one hundred eleven thousand, two hundred twenty-three".