210212120021021 has 8 divisors (see below), whose sum is σ = 210261318886080. Its totient is φ = 210162922351488.

The previous prime is 210212120021009. The next prime is 210212120021063. The reversal of 210212120021021 is 120120021212012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210212120021021 - 2²⁶ = 210212052912157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212120921021) 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 7 ways as a sum of consecutive naturals, for example, 419958125 + ... + 420458381.

It is an arithmetic number, because the mean of its divisors is an integer number (26282664860760).

Almost surely, 2^{210212120021021} is an apocalyptic number.

It is an amenable number.

210212120021021 is a deficient number, since it is larger than the sum of its proper divisors (49198865059).

210212120021021 is an equidigital number, since it uses as much as digits as its factorization.

210212120021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597763.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210212120021021 its reverse (120120021212012), we get a palindrome (330332141233033).

The spelling of 210212120021021 in words is "two hundred ten trillion, two hundred twelve billion, one hundred twenty million, twenty-one thousand, twenty-one".