11221435252 has 24 divisors (see below), whose sum is σ = 19730946312. Its totient is φ = 5584051200.

The previous prime is 11221435249. The next prime is 11221435261. The reversal of 11221435252 is 25253412211.

It is a happy number.

11221435252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2778765796 + 8442669456 = 52714^2 + 91884^2 .

It is a super-2 number, since 2×11221435252² (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 11221435252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2536002 + ... + 2540422.

It is an arithmetic number, because the mean of its divisors is an integer number (822122763).

Almost surely, 2^11221435252 is an apocalyptic number.

It is an amenable number.

11221435252 is a deficient number, since it is larger than the sum of its proper divisors (8509511060).

11221435252 is a wasteful number, since it uses less digits than its factorization.

11221435252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7299 (or 7297 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

Adding to 11221435252 its reverse (25253412211), we get a palindrome (36474847463).

The spelling of 11221435252 in words is "eleven billion, two hundred twenty-one million, four hundred thirty-five thousand, two hundred fifty-two".