11031221132 has 12 divisors (see below), whose sum is σ = 19416225696. Its totient is φ = 5483728080.

The previous prime is 11031221129. The next prime is 11031221203. The reversal of 11031221132 is 23112213011.

It is a super-2 number, since 2×11031221132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11031221132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7969844 + ... + 7971227.

It is an arithmetic number, because the mean of its divisors is an integer number (1618018808).

Almost surely, 2^11031221132 is an apocalyptic number.

It is an amenable number.

11031221132 is a deficient number, since it is larger than the sum of its proper divisors (8385004564).

11031221132 is a wasteful number, since it uses less digits than its factorization.

11031221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15941248 (or 15941246 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11031221132 its reverse (23112213011), we get a palindrome (34143434143).

The spelling of 11031221132 in words is "eleven billion, thirty-one million, two hundred twenty-one thousand, one hundred thirty-two".