11011312001 has 2 divisors, whose sum is σ = 11011312002. Its totient is φ = 11011312000.

The previous prime is 11011311967. The next prime is 11011312009. The reversal of 11011312001 is 10021311011.

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., 10413998401 + 597313600 = 102049^2 + 24440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011312001 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011312009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505656000 + 5505656001.

It is an arithmetic number, because the mean of its divisors is an integer number (5505656001).

Almost surely, 2^11011312001 is an apocalyptic number.

It is an amenable number.

11011312001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011312001 is an equidigital number, since it uses as much as digits as its factorization.

11011312001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11011312001 its reverse (10021311011), we get a palindrome (21032623012).

The spelling of 11011312001 in words is "eleven billion, eleven million, three hundred twelve thousand, one".