210100200212121 has 16 divisors (see below), whose sum is σ = 285803257479168. Its totient is φ = 137253862112400.

The previous prime is 210100200212101. The next prime is 210100200212171. The reversal of 210100200212121 is 121212002001012.

It is not a de Polignac number, because 210100200212121 - 2⁹ = 210100200211609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210100200212121.

It is not an unprimeable number, because it can be changed into a prime (210100200212101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2736282625 + ... + 2736359406.

It is an arithmetic number, because the mean of its divisors is an integer number (17862703592448).

Almost surely, 2^{210100200212121} is an apocalyptic number.

It is an amenable number.

210100200212121 is a deficient number, since it is larger than the sum of its proper divisors (75703057267047).

210100200212121 is a wasteful number, since it uses less digits than its factorization.

210100200212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472642292.

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

Adding to 210100200212121 its reverse (121212002001012), we get a palindrome (331312202213133).

The spelling of 210100200212121 in words is "two hundred ten trillion, one hundred billion, two hundred million, two hundred twelve thousand, one hundred twenty-one".