11333223311221 has 16 divisors (see below), whose sum is σ = 13018784845824. Its totient is φ = 9664421969664.

The previous prime is 11333223311203. The next prime is 11333223311261. The reversal of 11333223311221 is 12211332233311.

It is not a de Polignac number, because 11333223311221 - 2⁴³ = 2537130289013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11333223311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11333223311261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4259620 + ... + 6388333.

It is an arithmetic number, because the mean of its divisors is an integer number (813674052864).

Almost surely, 2^{11333223311221} is an apocalyptic number.

It is an amenable number.

11333223311221 is a deficient number, since it is larger than the sum of its proper divisors (1685561534603).

11333223311221 is a wasteful number, since it uses less digits than its factorization.

11333223311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10648740.

The product of its digits is 3888, while the sum is 28.

Adding to 11333223311221 its reverse (12211332233311), we get a palindrome (23544555544532).

The spelling of 11333223311221 in words is "eleven trillion, three hundred thirty-three billion, two hundred twenty-three million, three hundred eleven thousand, two hundred twenty-one".