1222022111 has 4 divisors (see below), whose sum is σ = 1223047632. Its totient is φ = 1220996592.

The previous prime is 1222022063. The next prime is 1222022119. The reversal of 1222022111 is 1112202221.

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 1222022111 - 2⁶ = 1222022047 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 (1222022119) 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, 510971 + ... + 513356.

It is an arithmetic number, because the mean of its divisors is an integer number (305761908).

Almost surely, 2^1222022111 is an apocalyptic number.

1222022111 is a deficient number, since it is larger than the sum of its proper divisors (1025521).

1222022111 is a wasteful number, since it uses less digits than its factorization.

1222022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025520.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1222022111 is about 34957.4328433883. The cubic root of 1222022111 is about 1069.1197555760.

Adding to 1222022111 its reverse (1112202221), we get a palindrome (2334224332).

The spelling of 1222022111 in words is "one billion, two hundred twenty-two million, twenty-two thousand, one hundred eleven".