212101222087 has 2 divisors, whose sum is σ = 212101222088. Its totient is φ = 212101222086.

The previous prime is 212101222061. The next prime is 212101222121. The reversal of 212101222087 is 780222101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212101222087 - 2¹¹ = 212101220039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101220087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050611043 + 106050611044.

It is an arithmetic number, because the mean of its divisors is an integer number (106050611044).

Almost surely, 2^212101222087 is an apocalyptic number.

212101222087 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101222087 is an equidigital number, since it uses as much as digits as its factorization.

212101222087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 28.

Adding to 212101222087 its reverse (780222101212), we get a palindrome (992323323299).

The spelling of 212101222087 in words is "two hundred twelve billion, one hundred one million, two hundred twenty-two thousand, eighty-seven".