12210209987 has 2 divisors, whose sum is σ = 12210209988. Its totient is φ = 12210209986.

The previous prime is 12210209983. The next prime is 12210210011. The reversal of 12210209987 is 78990201221.

It is a weak prime.

It is an emirp because it is prime and its reverse (78990201221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210209987 - 2² = 12210209983 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210209983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105104993 + 6105104994.

It is an arithmetic number, because the mean of its divisors is an integer number (6105104994).

Almost surely, 2^12210209987 is an apocalyptic number.

12210209987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210209987 is an equidigital number, since it uses as much as digits as its factorization.

12210209987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 12210209987 in words is "twelve billion, two hundred ten million, two hundred nine thousand, nine hundred eighty-seven".