1122312011 has 4 divisors (see below), whose sum is σ = 1123089072. Its totient is φ = 1121534952.

The previous prime is 1122311987. The next prime is 1122312049. The reversal of 1122312011 is 1102132211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1102132211 = 29 ⋅38004559.

It is a cyclic number.

It is not a de Polignac number, because 1122312011 - 2²⁶ = 1055203147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122312091) 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, 386360 + ... + 389253.

It is an arithmetic number, because the mean of its divisors is an integer number (280772268).

Almost surely, 2^1122312011 is an apocalyptic number.

1122312011 is a deficient number, since it is larger than the sum of its proper divisors (777061).

1122312011 is an equidigital number, since it uses as much as digits as its factorization.

1122312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777060.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1122312011 is about 33500.9255245284. The cubic root of 1122312011 is about 1039.2129187183.

Adding to 1122312011 its reverse (1102132211), we get a palindrome (2224444222).

The spelling of 1122312011 in words is "one billion, one hundred twenty-two million, three hundred twelve thousand, eleven".