12011322901 has 2 divisors, whose sum is σ = 12011322902. Its totient is φ = 12011322900.

The previous prime is 12011322893. The next prime is 12011322931. The reversal of 12011322901 is 10922311021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7849782801 + 4161540100 = 88599^2 + 64510^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011322901 - 2³ = 12011322893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011322931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005661450 + 6005661451.

It is an arithmetic number, because the mean of its divisors is an integer number (6005661451).

Almost surely, 2^12011322901 is an apocalyptic number.

It is an amenable number.

12011322901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011322901 is an equidigital number, since it uses as much as digits as its factorization.

12011322901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12011322901 its reverse (10922311021), we get a palindrome (22933633922).

The spelling of 12011322901 in words is "twelve billion, eleven million, three hundred twenty-two thousand, nine hundred one".