1222000111 has 4 divisors (see below), whose sum is σ = 1234099224. Its totient is φ = 1209901000.

The previous prime is 1222000063. The next prime is 1222000127. The reversal of 1222000111 is 1110002221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1110002221 = 101 ⋅10990121.

It is a cyclic number.

It is not a de Polignac number, because 1222000111 - 2⁷ = 1221999983 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 (1222000211) 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 3 ways as a sum of consecutive naturals, for example, 6049405 + ... + 6049606.

It is an arithmetic number, because the mean of its divisors is an integer number (308524806).

Almost surely, 2^1222000111 is an apocalyptic number.

1222000111 is a deficient number, since it is larger than the sum of its proper divisors (12099113).

1222000111 is a wasteful number, since it uses less digits than its factorization.

1222000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12099112.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1222000111 is about 34957.1181735566. The cubic root of 1222000111 is about 1069.1133397685.

Adding to 1222000111 its reverse (1110002221), we get a palindrome (2332002332).

The spelling of 1222000111 in words is "one billion, two hundred twenty-two million, one hundred eleven", and thus it is an aban number.