1122222011 has 4 divisors (see below), whose sum is σ = 1126273632. Its totient is φ = 1118170392.

The previous prime is 1122222007. The next prime is 1122222089. The reversal of 1122222011 is 1102222211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1102222211 = 167 ⋅6600133.

It is a cyclic number.

It is not a de Polignac number, because 1122222011 - 2² = 1122222007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122222611) 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, 2025395 + ... + 2025948.

It is an arithmetic number, because the mean of its divisors is an integer number (281568408).

Almost surely, 2^1122222011 is an apocalyptic number.

1122222011 is a deficient number, since it is larger than the sum of its proper divisors (4051621).

1122222011 is an equidigital number, since it uses as much as digits as its factorization.

1122222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051620.

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

The square root of 1122222011 is about 33499.5822511267. The cubic root of 1122222011 is about 1039.1851392589.

Adding to 1122222011 its reverse (1102222211), we get a palindrome (2224444222).

It can be divided in two parts, 11222 and 22011, that added together give a palindrome (33233).

The spelling of 1122222011 in words is "one billion, one hundred twenty-two million, two hundred twenty-two thousand, eleven".