122212100011987 has 2 divisors, whose sum is σ = 122212100011988. Its totient is φ = 122212100011986.

The previous prime is 122212100011979. The next prime is 122212100011999. The reversal of 122212100011987 is 789110001212221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122212100011987 - 2³ = 122212100011979 is a prime.

It is not a weakly prime, because it can be changed into another prime (122212100011787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106050005993 + 61106050005994.

It is an arithmetic number, because the mean of its divisors is an integer number (61106050005994).

Almost surely, 2^{122212100011987} is an apocalyptic number.

122212100011987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212100011987 is an equidigital number, since it uses as much as digits as its factorization.

122212100011987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 37.

The spelling of 122212100011987 in words is "one hundred twenty-two trillion, two hundred twelve billion, one hundred million, eleven thousand, nine hundred eighty-seven".