212011100087 has 2 divisors, whose sum is σ = 212011100088. Its totient is φ = 212011100086.

The previous prime is 212011100083. The next prime is 212011100089. The reversal of 212011100087 is 780001110212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212011100087 - 2² = 212011100083 is a prime.

Together with 212011100089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212011100083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005550043 + 106005550044.

It is an arithmetic number, because the mean of its divisors is an integer number (106005550044).

Almost surely, 2^212011100087 is an apocalyptic number.

212011100087 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011100087 is an equidigital number, since it uses as much as digits as its factorization.

212011100087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 212011100087 its reverse (780001110212), we get a palindrome (992012210299).

The spelling of 212011100087 in words is "two hundred twelve billion, eleven million, one hundred thousand, eighty-seven".