121212031207 has 2 divisors, whose sum is σ = 121212031208. Its totient is φ = 121212031206.

The previous prime is 121212031183. The next prime is 121212031243. The reversal of 121212031207 is 702130212121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121212031207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212031607) 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, 60606015603 + 60606015604.

It is an arithmetic number, because the mean of its divisors is an integer number (60606015604).

Almost surely, 2^121212031207 is an apocalyptic number.

121212031207 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212031207 is an equidigital number, since it uses as much as digits as its factorization.

121212031207 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 121212031207 its reverse (702130212121), we get a palindrome (823342243328).

The spelling of 121212031207 in words is "one hundred twenty-one billion, two hundred twelve million, thirty-one thousand, two hundred seven".