12111011201 has 2 divisors, whose sum is σ = 12111011202. Its totient is φ = 12111011200.

The previous prime is 12111011161. The next prime is 12111011221. The reversal of 12111011201 is 10211011121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11828737600 + 282273601 = 108760^2 + 16801^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111011201 - 2¹⁴ = 12110994817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12111011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055505600 + 6055505601.

It is an arithmetic number, because the mean of its divisors is an integer number (6055505601).

Almost surely, 2^12111011201 is an apocalyptic number.

It is an amenable number.

12111011201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111011201 is an equidigital number, since it uses as much as digits as its factorization.

12111011201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12111011201 its reverse (10211011121), we get a palindrome (22322022322).

The spelling of 12111011201 in words is "twelve billion, one hundred eleven million, eleven thousand, two hundred one".