1131401222 has 16 divisors (see below), whose sum is σ = 1945870080. Its totient is φ = 483304968.

The previous prime is 1131401177. The next prime is 1131401269. The reversal of 1131401222 is 2221041311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131401222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127322 + ... + 135917.

It is an arithmetic number, because the mean of its divisors is an integer number (121616880).

Almost surely, 2^1131401222 is an apocalyptic number.

1131401222 is a deficient number, since it is larger than the sum of its proper divisors (814468858).

1131401222 is a wasteful number, since it uses less digits than its factorization.

1131401222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263555.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1131401222 is about 33636.3080911089. The cubic root of 1131401222 is about 1042.0107861488.

Adding to 1131401222 its reverse (2221041311), we get a palindrome (3352442533).

The spelling of 1131401222 in words is "one billion, one hundred thirty-one million, four hundred one thousand, two hundred twenty-two".