1122220111 has 6 divisors (see below), whose sum is σ = 1140922536. Its totient is φ = 1103819400.

The previous prime is 1122220093. The next prime is 1122220139. The reversal of 1122220111 is 1110222211.

It is not a de Polignac number, because 1122220111 - 2⁵ = 1122220079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122220091 and 1122220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122220811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147075 + ... + 154516.

It is an arithmetic number, because the mean of its divisors is an integer number (190153756).

Almost surely, 2^1122220111 is an apocalyptic number.

1122220111 is a deficient number, since it is larger than the sum of its proper divisors (18702425).

1122220111 is an frugal number, since it uses more digits than its factorization.

1122220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301713 (or 301652 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1122220111 is about 33499.5538925521. The cubic root of 1122220111 is about 1039.1845527876.

Adding to 1122220111 its reverse (1110222211), we get a palindrome (2232442322).

The spelling of 1122220111 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred eleven".