12013121311 has 2 divisors, whose sum is σ = 12013121312. Its totient is φ = 12013121310.

The previous prime is 12013121303. The next prime is 12013121321. The reversal of 12013121311 is 11312131021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12013121311 - 2³ = 12013121303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013121321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006560655 + 6006560656.

It is an arithmetic number, because the mean of its divisors is an integer number (6006560656).

Almost surely, 2^12013121311 is an apocalyptic number.

12013121311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013121311 is an equidigital number, since it uses as much as digits as its factorization.

12013121311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12013121311 its reverse (11312131021), we get a palindrome (23325252332).

The spelling of 12013121311 in words is "twelve billion, thirteen million, one hundred twenty-one thousand, three hundred eleven".