111161114221 has 4 divisors (see below), whose sum is σ = 117011699200. Its totient is φ = 105310529244.

The previous prime is 111161114219. The next prime is 111161114237. The reversal of 111161114221 is 122411161111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111161114221 - 2¹ = 111161114219 is a prime.

It is a super-3 number, since 3×111161114221³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111161114192 and 111161114201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111161114621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2925292461 + ... + 2925292498.

It is an arithmetic number, because the mean of its divisors is an integer number (29252924800).

Almost surely, 2^111161114221 is an apocalyptic number.

It is an amenable number.

111161114221 is a deficient number, since it is larger than the sum of its proper divisors (5850584979).

111161114221 is an equidigital number, since it uses as much as digits as its factorization.

111161114221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850584978.

The product of its digits is 96, while the sum is 22.

Adding to 111161114221 its reverse (122411161111), we get a palindrome (233572275332).

The spelling of 111161114221 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred fourteen thousand, two hundred twenty-one".