11221234312 has 16 divisors (see below), whose sum is σ = 21044123100. Its totient is φ = 5609468160.

The previous prime is 11221234289. The next prime is 11221234333. The reversal of 11221234312 is 21343212211.

It can be written as a sum of positive squares in 2 ways, for example, as 11213539236 + 7695076 = 105894^2 + 2774^2 .

It is a super-2 number, since 2×11221234312² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101389 + ... + 180892.

Almost surely, 2^11221234312 is an apocalyptic number.

It is an amenable number.

11221234312 is a deficient number, since it is larger than the sum of its proper divisors (9822888788).

11221234312 is a wasteful number, since it uses less digits than its factorization.

11221234312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287256 (or 287252 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 11221234312 its reverse (21343212211), we get a palindrome (32564446523).

The spelling of 11221234312 in words is "eleven billion, two hundred twenty-one million, two hundred thirty-four thousand, three hundred twelve".