111110100111001 has 2 divisors, whose sum is σ = 111110100111002. Its totient is φ = 111110100111000.

The previous prime is 111110100110993. The next prime is 111110100111037. The reversal of 111110100111001 is 100111001011111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104197139290000 + 6912960821001 = 10207700^2 + 2629251^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110100111001 - 2³ = 111110100110993 is a prime.

It is not a weakly prime, because it can be changed into another prime (111110100112001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555050055500 + 55555050055501.

It is an arithmetic number, because the mean of its divisors is an integer number (55555050055501).

Almost surely, 2^{111110100111001} is an apocalyptic number.

It is an amenable number.

111110100111001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110100111001 is an equidigital number, since it uses as much as digits as its factorization.

111110100111001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111110100111001 its reverse (100111001011111), we get a palindrome (211221101122112).

The spelling of 111110100111001 in words is "one hundred eleven trillion, one hundred ten billion, one hundred million, one hundred eleven thousand, one".