122100210011987 has 2 divisors, whose sum is σ = 122100210011988. Its totient is φ = 122100210011986.

The previous prime is 122100210011929. The next prime is 122100210012023. The reversal of 122100210011987 is 789110012001221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122100210011987 - 2⁴⁰ = 121000698384211 is a prime.

It is a super-2 number, since 2×122100210011987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122100210011387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050105005993 + 61050105005994.

It is an arithmetic number, because the mean of its divisors is an integer number (61050105005994).

Almost surely, 2^{122100210011987} is an apocalyptic number.

122100210011987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100210011987 is an equidigital number, since it uses as much as digits as its factorization.

122100210011987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

The spelling of 122100210011987 in words is "one hundred twenty-two trillion, one hundred billion, two hundred ten million, eleven thousand, nine hundred eighty-seven".