121212111967 has 2 divisors, whose sum is σ = 121212111968. Its totient is φ = 121212111966.

The previous prime is 121212111959. The next prime is 121212111973. The reversal of 121212111967 is 769111212121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121212111967 - 2³ = 121212111959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212111947) 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, 60606055983 + 60606055984.

It is an arithmetic number, because the mean of its divisors is an integer number (60606055984).

Almost surely, 2^121212111967 is an apocalyptic number.

121212111967 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212111967 is an equidigital number, since it uses as much as digits as its factorization.

121212111967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 34.

The spelling of 121212111967 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, nine hundred sixty-seven".