210212000221121 has 32 divisors (see below), whose sum is σ = 232963745995008. Its totient is φ = 188667049697280.

The previous prime is 210212000221117. The next prime is 210212000221127. The reversal of 210212000221121 is 121122000212012.

It is a cyclic number.

It is not a de Polignac number, because 210212000221121 - 2² = 210212000221117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210212000221121.

It is not an unprimeable number, because it can be changed into a prime (210212000221127) 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 31 ways as a sum of consecutive naturals, for example, 637639490 + ... + 637969076.

It is an arithmetic number, because the mean of its divisors is an integer number (7280117062344).

Almost surely, 2^{210212000221121} is an apocalyptic number.

It is an amenable number.

210212000221121 is a deficient number, since it is larger than the sum of its proper divisors (22751745773887).

210212000221121 is a wasteful number, since it uses less digits than its factorization.

210212000221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334601.

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

Adding to 210212000221121 its reverse (121122000212012), we get a palindrome (331334000433133).

The spelling of 210212000221121 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-one thousand, one hundred twenty-one".