11211221211323 has 32 divisors (see below), whose sum is σ = 13124505600000. Its totient is φ = 9378418747680.

The previous prime is 11211221211319. The next prime is 11211221211341. The reversal of 11211221211323 is 32311212211211.

11211221211323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11211221211323 - 2² = 11211221211319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211221211353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39220208 + ... + 39505026.

It is an arithmetic number, because the mean of its divisors is an integer number (410140800000).

Almost surely, 2^{11211221211323} is an apocalyptic number.

11211221211323 is a deficient number, since it is larger than the sum of its proper divisors (1913284388677).

11211221211323 is a wasteful number, since it uses less digits than its factorization.

11211221211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285575.

The product of its digits is 288, while the sum is 23.

Adding to 11211221211323 its reverse (32311212211211), we get a palindrome (43522433422534).

The spelling of 11211221211323 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred eleven thousand, three hundred twenty-three".