2001111223 has 2 divisors, whose sum is σ = 2001111224. Its totient is φ = 2001111222.

The previous prime is 2001111221. The next prime is 2001111227. The reversal of 2001111223 is 3221111002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001111223 - 2¹ = 2001111221 is a prime.

It is a super-2 number, since 2×2001111223² = 8008892253633111458, which contains 22 as substring.

Together with 2001111221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000555611 + 1000555612.

It is an arithmetic number, because the mean of its divisors is an integer number (1000555612).

Almost surely, 2^2001111223 is an apocalyptic number.

2001111223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001111223 is an equidigital number, since it uses as much as digits as its factorization.

2001111223 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2001111223 is about 44733.7816755972. The cubic root of 2001111223 is about 1260.1543489005.

Adding to 2001111223 its reverse (3221111002), we get a palindrome (5222222225).

The spelling of 2001111223 in words is "two billion, one million, one hundred eleven thousand, two hundred twenty-three".