11321221323028 has 24 divisors (see below), whose sum is σ = 20017661414184. Its totient is φ = 5601941952000.

The previous prime is 11321221322953. The next prime is 11321221323029. The reversal of 11321221323028 is 82032312212311.

It can be written as a sum of positive squares in 4 ways, for example, as 2760661764 + 11318460661264 = 52542^2 + 3364292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321221323029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5693233 + ... + 7419928.

It is an arithmetic number, because the mean of its divisors is an integer number (834069225591).

Almost surely, 2^{11321221323028} is an apocalyptic number.

It is an amenable number.

11321221323028 is a deficient number, since it is larger than the sum of its proper divisors (8696440091156).

11321221323028 is a wasteful number, since it uses less digits than its factorization.

11321221323028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13115403 (or 13115401 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 11321221323028 its reverse (82032312212311), we get a palindrome (93353533535339).

The spelling of 11321221323028 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, twenty-eight".