111211135321 has 16 divisors (see below), whose sum is σ = 131162064768. Its totient is φ = 92960870400.

The previous prime is 111211135291. The next prime is 111211135327. The reversal of 111211135321 is 123531112111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111211135321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211135292 and 111211135301.

It is not an unprimeable number, because it can be changed into a prime (111211135327) 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, 1476285 + ... + 1549786.

It is an arithmetic number, because the mean of its divisors is an integer number (8197629048).

Almost surely, 2^111211135321 is an apocalyptic number.

111211135321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111211135321 is a deficient number, since it is larger than the sum of its proper divisors (19950929447).

111211135321 is a wasteful number, since it uses less digits than its factorization.

111211135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026352.

The product of its digits is 180, while the sum is 22.

Adding to 111211135321 its reverse (123531112111), we get a palindrome (234742247432).

The spelling of 111211135321 in words is "one hundred eleven billion, two hundred eleven million, one hundred thirty-five thousand, three hundred twenty-one".