1210002211987 has 2 divisors, whose sum is σ = 1210002211988. Its totient is φ = 1210002211986.

The previous prime is 1210002211981. The next prime is 1210002212033. The reversal of 1210002211987 is 7891122000121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210002211987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210002211981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605001105993 + 605001105994.

It is an arithmetic number, because the mean of its divisors is an integer number (605001105994).

Almost surely, 2^{1210002211987} is an apocalyptic number.

1210002211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210002211987 is an equidigital number, since it uses as much as digits as its factorization.

1210002211987 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 34.

The spelling of 1210002211987 in words is "one trillion, two hundred ten billion, two million, two hundred eleven thousand, nine hundred eighty-seven".