210001200210121 has 4 divisors (see below), whose sum is σ = 210017964108672. Its totient is φ = 209984436311572.

The previous prime is 210001200210103. The next prime is 210001200210149. The reversal of 210001200210121 is 121012002100012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210001200210121 - 2⁹ = 210001200209609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210001204210121) 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 3 ways as a sum of consecutive naturals, for example, 8381930485 + ... + 8381955538.

It is an arithmetic number, because the mean of its divisors is an integer number (52504491027168).

Almost surely, 2^{210001200210121} is an apocalyptic number.

It is an amenable number.

210001200210121 is a deficient number, since it is larger than the sum of its proper divisors (16763898551).

210001200210121 is a wasteful number, since it uses less digits than its factorization.

210001200210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16763898550.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210001200210121 its reverse (121012002100012), we get a palindrome (331013202310133).

The spelling of 210001200210121 in words is "two hundred ten trillion, one billion, two hundred million, two hundred ten thousand, one hundred twenty-one".