210021002196871 has 2 divisors, whose sum is σ = 210021002196872. Its totient is φ = 210021002196870.

The previous prime is 210021002196847. The next prime is 210021002196919. The reversal of 210021002196871 is 178691200120012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210021002196871 - 2⁵ = 210021002196839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210021002199871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010501098435 + 105010501098436.

It is an arithmetic number, because the mean of its divisors is an integer number (105010501098436).

Almost surely, 2^{210021002196871} is an apocalyptic number.

210021002196871 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021002196871 is an equidigital number, since it uses as much as digits as its factorization.

210021002196871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 210021002196871 in words is "two hundred ten trillion, twenty-one billion, two million, one hundred ninety-six thousand, eight hundred seventy-one".