1122711156 has 36 divisors (see below), whose sum is σ = 3243388512. Its totient is φ = 320774544.

The previous prime is 1122711151. The next prime is 1122711157. The reversal of 1122711156 is 6511172211.

1122711156 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122711151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2227350 + ... + 2227853.

Almost surely, 2^1122711156 is an apocalyptic number.

It is an amenable number.

1122711156 is an abundant number, since it is smaller than the sum of its proper divisors (2120677356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122711156 is a wasteful number, since it uses less digits than its factorization.

1122711156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455220 (or 4455215 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 1122711156 is about 33506.8822184339. The cubic root of 1122711156 is about 1039.3361011823.

Adding to 1122711156 its reverse (6511172211), we get a palindrome (7633883367).

The spelling of 1122711156 in words is "one billion, one hundred twenty-two million, seven hundred eleven thousand, one hundred fifty-six".