210121000210221 has 8 divisors (see below), whose sum is σ = 284909830793760. Its totient is φ = 137706418216752.

The previous prime is 210121000210213. The next prime is 210121000210241. The reversal of 210121000210221 is 122012000121012.

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

It is not a de Polignac number, because 210121000210221 - 2³ = 210121000210213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210121000210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121000210241) 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, 593562147310 + ... + 593562147663.

It is an arithmetic number, because the mean of its divisors is an integer number (35613728849220).

Almost surely, 2^{210121000210221} is an apocalyptic number.

It is an amenable number.

210121000210221 is a deficient number, since it is larger than the sum of its proper divisors (74788830583539).

210121000210221 is a wasteful number, since it uses less digits than its factorization.

210121000210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187124295035.

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

Adding to 210121000210221 its reverse (122012000121012), we get a palindrome (332133000331233).

The spelling of 210121000210221 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred ten thousand, two hundred twenty-one".