12011211013 has 2 divisors, whose sum is σ = 12011211014. Its totient is φ = 12011211012.

The previous prime is 12011211011. The next prime is 12011211029. The reversal of 12011211013 is 31011211021.

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., 8930628004 + 3080583009 = 94502^2 + 55503^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011211013 - 2¹ = 12011211011 is a prime.

Together with 12011211011, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12011210984 and 12011211002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011211011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005605506 + 6005605507.

It is an arithmetic number, because the mean of its divisors is an integer number (6005605507).

Almost surely, 2^12011211013 is an apocalyptic number.

It is an amenable number.

12011211013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011211013 is an equidigital number, since it uses as much as digits as its factorization.

12011211013 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.

Adding to 12011211013 its reverse (31011211021), we get a palindrome (43022422034).

The spelling of 12011211013 in words is "twelve billion, eleven million, two hundred eleven thousand, thirteen".