210211110000121 has 16 divisors (see below), whose sum is σ = 220274856209920. Its totient is φ = 200360396223360.

The previous prime is 210211110000083. The next prime is 210211110000161. The reversal of 210211110000121 is 121000011112012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210211110000121 - 2¹¹ = 210211109998073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210211110000161) 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, 63903615 + ... + 67112548.

It is an arithmetic number, because the mean of its divisors is an integer number (13767178513120).

Almost surely, 2^{210211110000121} is an apocalyptic number.

It is an amenable number.

210211110000121 is a deficient number, since it is larger than the sum of its proper divisors (10063746209799).

210211110000121 is a wasteful number, since it uses less digits than its factorization.

210211110000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131016976.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210211110000121 its reverse (121000011112012), we get a palindrome (331211121112133).

The spelling of 210211110000121 in words is "two hundred ten trillion, two hundred eleven billion, one hundred ten million, one hundred twenty-one", and thus it is an aban number.