11221213432144 has 20 divisors (see below), whose sum is σ = 21743262265140. Its totient is φ = 5610048976640.

The previous prime is 11221213432123. The next prime is 11221213432151. The reversal of 11221213432144 is 44123431212211.

It can be written as a sum of positive squares in 2 ways, for example, as 2377726992144 + 8843486440000 = 1541988^2 + 2973800^2 .

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 3 ways as a sum of consecutive naturals, for example, 34692709 + ... + 35014660.

It is an arithmetic number, because the mean of its divisors is an integer number (1087163113257).

Almost surely, 2^{11221213432144} is an apocalyptic number.

It is an amenable number.

11221213432144 is a deficient number, since it is larger than the sum of its proper divisors (10522048832996).

11221213432144 is a wasteful number, since it uses less digits than its factorization.

11221213432144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69717438 (or 69717432 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

Adding to 11221213432144 its reverse (44123431212211), we get a palindrome (55344644644355).

The spelling of 11221213432144 in words is "eleven trillion, two hundred twenty-one billion, two hundred thirteen million, four hundred thirty-two thousand, one hundred forty-four".