1131144222 has 32 divisors (see below), whose sum is σ = 2439656352. Its totient is φ = 347566464.

The previous prime is 1131144173. The next prime is 1131144227. The reversal of 1131144222 is 2224411311.

1131144222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131144227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49468 + ... + 68624.

It is an arithmetic number, because the mean of its divisors is an integer number (76239261).

Almost surely, 2^1131144222 is an apocalyptic number.

1131144222 is an abundant number, since it is smaller than the sum of its proper divisors (1308512130).

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

1131144222 is a wasteful number, since it uses less digits than its factorization.

1131144222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19932.

The product of its digits is 384, while the sum is 21.

The square root of 1131144222 is about 33632.4875975596. The cubic root of 1131144222 is about 1041.9318819116.

Adding to 1131144222 its reverse (2224411311), we get a palindrome (3355555533).

The spelling of 1131144222 in words is "one billion, one hundred thirty-one million, one hundred forty-four thousand, two hundred twenty-two".