111220221113 has 4 divisors (see below), whose sum is σ = 111966665700. Its totient is φ = 110473776528.

The previous prime is 111220221107. The next prime is 111220221121. The reversal of 111220221113 is 311122022111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74315121664 + 36905099449 = 272608^2 + 192107^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220221113 - 2⁸ = 111220220857 is a prime.

It is a super-2 number, since 2×111220221113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111220221091 and 111220221100.

It is not an unprimeable number, because it can be changed into a prime (111220221103) 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, 373222070 + ... + 373222367.

It is an arithmetic number, because the mean of its divisors is an integer number (27991666425).

Almost surely, 2^111220221113 is an apocalyptic number.

It is an amenable number.

111220221113 is a deficient number, since it is larger than the sum of its proper divisors (746444587).

111220221113 is an equidigital number, since it uses as much as digits as its factorization.

111220221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746444586.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111220221113 its reverse (311122022111), we get a palindrome (422342243224).

It can be divided in two parts, 11122022111 and 3, that multiplied together give a palindrome (33366066333).

The spelling of 111220221113 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, one hundred thirteen".