222002111 has 4 divisors (see below), whose sum is σ = 223228824. Its totient is φ = 220775400.

The previous prime is 222002101. The next prime is 222002113. The reversal of 222002111 is 111200222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222002111 - 2¹⁸ = 221739967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222002092 and 222002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222002113) 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, 613085 + ... + 613446.

It is an arithmetic number, because the mean of its divisors is an integer number (55807206).

Almost surely, 2^222002111 is an apocalyptic number.

222002111 is a deficient number, since it is larger than the sum of its proper divisors (1226713).

222002111 is a wasteful number, since it uses less digits than its factorization.

222002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226712.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 222002111 is about 14899.7352661046. The cubic root of 222002111 is about 605.5068138955.

Adding to 222002111 its reverse (111200222), we get a palindrome (333202333).

The spelling of 222002111 in words is "two hundred twenty-two million, two thousand, one hundred eleven".