12131221411 has 2 divisors, whose sum is σ = 12131221412. Its totient is φ = 12131221410.

The previous prime is 12131221387. The next prime is 12131221423. The reversal of 12131221411 is 11412213121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12131221411 - 2⁵ = 12131221379 is a prime.

It is not a weakly prime, because it can be changed into another prime (12131221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065610705 + 6065610706.

It is an arithmetic number, because the mean of its divisors is an integer number (6065610706).

Almost surely, 2^12131221411 is an apocalyptic number.

12131221411 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131221411 is an equidigital number, since it uses as much as digits as its factorization.

12131221411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 19.

Adding to 12131221411 its reverse (11412213121), we get a palindrome (23543434532).

The spelling of 12131221411 in words is "twelve billion, one hundred thirty-one million, two hundred twenty-one thousand, four hundred eleven".