210212102010021 has 16 divisors (see below), whose sum is σ = 287873137432704. Its totient is φ = 136346631960384.

The previous prime is 210212102010019. The next prime is 210212102010061. The reversal of 210212102010021 is 120010201212012.

It is not a de Polignac number, because 210212102010021 - 2¹ = 210212102010019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212102010061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47626945 + ... + 51853158.

It is an arithmetic number, because the mean of its divisors is an integer number (17992071089544).

Almost surely, 2^{210212102010021} is an apocalyptic number.

It is an amenable number.

210212102010021 is a deficient number, since it is larger than the sum of its proper divisors (77661035422683).

210212102010021 is a wasteful number, since it uses less digits than its factorization.

210212102010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99499180.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210212102010021 its reverse (120010201212012), we get a palindrome (330222303222033).

The spelling of 210212102010021 in words is "two hundred ten trillion, two hundred twelve billion, one hundred two million, ten thousand, twenty-one".