1212201720967 has 2 divisors, whose sum is σ = 1212201720968. Its totient is φ = 1212201720966.

The previous prime is 1212201720931. The next prime is 1212201720991. The reversal of 1212201720967 is 7690271022121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212201720967 - 2⁷ = 1212201720839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212201720767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100860483 + 606100860484.

It is an arithmetic number, because the mean of its divisors is an integer number (606100860484).

Almost surely, 2^{1212201720967} is an apocalyptic number.

1212201720967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212201720967 is an equidigital number, since it uses as much as digits as its factorization.

1212201720967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 1212201720967 in words is "one trillion, two hundred twelve billion, two hundred one million, seven hundred twenty thousand, nine hundred sixty-seven".