212110211987 has 2 divisors, whose sum is σ = 212110211988. Its totient is φ = 212110211986.

The previous prime is 212110211983. The next prime is 212110212023. The reversal of 212110211987 is 789112011212.

212110211987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212110211987 - 2² = 212110211983 is a prime.

It is not a weakly prime, because it can be changed into another prime (212110211983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055105993 + 106055105994.

It is an arithmetic number, because the mean of its divisors is an integer number (106055105994).

Almost surely, 2^212110211987 is an apocalyptic number.

212110211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212110211987 is an equidigital number, since it uses as much as digits as its factorization.

212110211987 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 212110211987 in words is "two hundred twelve billion, one hundred ten million, two hundred eleven thousand, nine hundred eighty-seven".