122221212187 has 2 divisors, whose sum is σ = 122221212188. Its totient is φ = 122221212186.

The previous prime is 122221212131. The next prime is 122221212203. The reversal of 122221212187 is 781212122221.

It is a strong prime.

It is an emirp because it is prime and its reverse (781212122221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122221212187 is a prime.

It is not a weakly prime, because it can be changed into another prime (122221212107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110606093 + 61110606094.

It is an arithmetic number, because the mean of its divisors is an integer number (61110606094).

Almost surely, 2^122221212187 is an apocalyptic number.

122221212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221212187 is an equidigital number, since it uses as much as digits as its factorization.

122221212187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 31.

The spelling of 122221212187 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred eighty-seven".