12121231207 has 2 divisors, whose sum is σ = 12121231208. Its totient is φ = 12121231206.

The previous prime is 12121231153. The next prime is 12121231211. The reversal of 12121231207 is 70213212121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121231207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121231277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060615603 + 6060615604.

It is an arithmetic number, because the mean of its divisors is an integer number (6060615604).

Almost surely, 2^12121231207 is an apocalyptic number.

12121231207 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121231207 is an equidigital number, since it uses as much as digits as its factorization.

12121231207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12121231207 its reverse (70213212121), we get a palindrome (82334443328).

The spelling of 12121231207 in words is "twelve billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred seven".