1122222111 has 32 divisors (see below), whose sum is σ = 1556222976. Its totient is φ = 718848000.

The previous prime is 1122222089. The next prime is 1122222119. The reversal of 1122222111 is 1112222211.

It is not a de Polignac number, because 1122222111 - 2¹⁴ = 1122205727 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122222119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4140906 + ... + 4141176.

It is an arithmetic number, because the mean of its divisors is an integer number (48631968).

Almost surely, 2^1122222111 is an apocalyptic number.

1122222111 is a deficient number, since it is larger than the sum of its proper divisors (434000865).

1122222111 is a wasteful number, since it uses less digits than its factorization.

1122222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 32, while the sum is 15.

The square root of 1122222111 is about 33499.5837436825. The cubic root of 1122222111 is about 1039.1851701258.

Adding to 1122222111 its reverse (1112222211), we get a palindrome (2234444322).

It can be divided in two parts, 11222 and 22111, that added together give a palindrome (33333).

The spelling of 1122222111 in words is "one billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".