12021245311 has 2 divisors, whose sum is σ = 12021245312. Its totient is φ = 12021245310.

The previous prime is 12021245303. The next prime is 12021245333. The reversal of 12021245311 is 11354212021.

It is an a-pointer prime, because the next prime (12021245333) can be obtained adding 12021245311 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021245311 - 2³ = 12021245303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021245381) 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, 6010622655 + 6010622656.

It is an arithmetic number, because the mean of its divisors is an integer number (6010622656).

Almost surely, 2^12021245311 is an apocalyptic number.

12021245311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021245311 is an equidigital number, since it uses as much as digits as its factorization.

12021245311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 12021245311 its reverse (11354212021), we get a palindrome (23375457332).

The spelling of 12021245311 in words is "twelve billion, twenty-one million, two hundred forty-five thousand, three hundred eleven".