111200110001 has 2 divisors, whose sum is σ = 111200110002. Its totient is φ = 111200110000.

The previous prime is 111200109983. The next prime is 111200110009. The reversal of 111200110001 is 100011002111.

It is a happy number.

It is an a-pointer prime, because the next prime (111200110009) can be obtained adding 111200110001 to its sum of digits (8).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78952570225 + 32247539776 = 280985^2 + 179576^2 .

It is an emirp because it is prime and its reverse (100011002111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111200110001 - 2²² = 111195915697 is a prime.

It is not a weakly prime, because it can be changed into another prime (111200110009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600055000 + 55600055001.

It is an arithmetic number, because the mean of its divisors is an integer number (55600055001).

Almost surely, 2^111200110001 is an apocalyptic number.

It is an amenable number.

111200110001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111200110001 is an equidigital number, since it uses as much as digits as its factorization.

111200110001 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 8.

Adding to 111200110001 its reverse (100011002111), we get a palindrome (211211112112).

The spelling of 111200110001 in words is "one hundred eleven billion, two hundred million, one hundred ten thousand, one".