111201111101 has 2 divisors, whose sum is σ = 111201111102. Its totient is φ = 111201111100.

The previous prime is 111201111031. The next prime is 111201111103. The reversal of 111201111101 is 101111102111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79436604025 + 31764507076 = 281845^2 + 178226^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201111101 - 2²⁶ = 111134002237 is a prime.

It is a super-2 number, since 2×111201111101² (a number of 23 digits) contains 22 as substring.

Together with 111201111103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201111103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600555550 + 55600555551.

It is an arithmetic number, because the mean of its divisors is an integer number (55600555551).

Almost surely, 2^111201111101 is an apocalyptic number.

It is an amenable number.

111201111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201111101 is an equidigital number, since it uses as much as digits as its factorization.

111201111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111201111101 its reverse (101111102111), we get a palindrome (212312213212).

The spelling of 111201111101 in words is "one hundred eleven billion, two hundred one million, one hundred eleven thousand, one hundred one".