212102206087 has 4 divisors (see below), whose sum is σ = 213053337280. Its totient is φ = 211151074896.

The previous prime is 212102206051. The next prime is 212102206093. The reversal of 212102206087 is 780602201212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212102206087 - 2²³ = 212093817479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102206027) 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 in 3 ways as a sum of consecutive naturals, for example, 475565262 + ... + 475565707.

It is an arithmetic number, because the mean of its divisors is an integer number (53263334320).

Almost surely, 2^212102206087 is an apocalyptic number.

212102206087 is a deficient number, since it is larger than the sum of its proper divisors (951131193).

212102206087 is an equidigital number, since it uses as much as digits as its factorization.

212102206087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951131192.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 212102206087 its reverse (780602201212), we get a palindrome (992704407299).

The spelling of 212102206087 in words is "two hundred twelve billion, one hundred two million, two hundred six thousand, eighty-seven".