210101002012121 has 16 divisors (see below), whose sum is σ = 237131431372800. Its totient is φ = 184393787491200.

The previous prime is 210101002012067. The next prime is 210101002012199. The reversal of 210101002012121 is 121210200101012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210101002012121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210101002012096 and 210101002012105.

It is not an unprimeable number, because it can be changed into a prime (210101002017121) 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 15 ways as a sum of consecutive naturals, for example, 34473356 + ... + 40107533.

It is an arithmetic number, because the mean of its divisors is an integer number (14820714460800).

Almost surely, 2^{210101002012121} is an apocalyptic number.

It is an amenable number.

210101002012121 is a deficient number, since it is larger than the sum of its proper divisors (27030429360679).

210101002012121 is a wasteful number, since it uses less digits than its factorization.

210101002012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74589760.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210101002012121 its reverse (121210200101012), we get a palindrome (331311202113133).

The spelling of 210101002012121 in words is "two hundred ten trillion, one hundred one billion, two million, twelve thousand, one hundred twenty-one".