212021123087 has 2 divisors, whose sum is σ = 212021123088. Its totient is φ = 212021123086.

The previous prime is 212021123059. The next prime is 212021123183. The reversal of 212021123087 is 780321120212.

212021123087 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 212021123087 - 2¹⁰ = 212021122063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021125087) 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, 106010561543 + 106010561544.

It is an arithmetic number, because the mean of its divisors is an integer number (106010561544).

Almost surely, 2^212021123087 is an apocalyptic number.

212021123087 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021123087 is an equidigital number, since it uses as much as digits as its factorization.

212021123087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 212021123087 its reverse (780321120212), we get a palindrome (992342243299).

The spelling of 212021123087 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, eighty-seven".