1111312201 has 2 divisors, whose sum is σ = 1111312202. Its totient is φ = 1111312200.

The previous prime is 1111312187. The next prime is 1111312247. The reversal of 1111312201 is 1022131111.

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., 1107292176 + 4020025 = 33276^2 + 2005^2 .

It is an emirp because it is prime and its reverse (1022131111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111312201 - 2⁷ = 1111312073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111312291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555656100 + 555656101.

It is an arithmetic number, because the mean of its divisors is an integer number (555656101).

Almost surely, 2^1111312201 is an apocalyptic number.

It is an amenable number.

1111312201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111312201 is an equidigital number, since it uses as much as digits as its factorization.

1111312201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1111312201 is about 33336.3495452037. The cubic root of 1111312201 is about 1035.8066481862.

Adding to 1111312201 its reverse (1022131111), we get a palindrome (2133443312).

The spelling of 1111312201 in words is "one billion, one hundred eleven million, three hundred twelve thousand, two hundred one".