210102100121121 has 16 divisors (see below), whose sum is σ = 301685839163520. Its totient is φ = 129293269079040.

The previous prime is 210102100121101. The next prime is 210102100121231. The reversal of 210102100121121 is 121121001201012.

It is a happy number.

It is not a de Polignac number, because 210102100121121 - 2⁶ = 210102100121057 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210102100121121.

It is not an unprimeable number, because it can be changed into a prime (210102100121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8997441 + ... + 22386561.

It is an arithmetic number, because the mean of its divisors is an integer number (18855364947720).

Almost surely, 2^{210102100121121} is an apocalyptic number.

It is an amenable number.

210102100121121 is a deficient number, since it is larger than the sum of its proper divisors (91583739042399).

210102100121121 is a wasteful number, since it uses less digits than its factorization.

210102100121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791496.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210102100121121 its reverse (121121001201012), we get a palindrome (331223101322133).

The spelling of 210102100121121 in words is "two hundred ten trillion, one hundred two billion, one hundred million, one hundred twenty-one thousand, one hundred twenty-one".