210201022002121 has 16 divisors (see below), whose sum is σ = 212621934680064. Its totient is φ = 207789982753024.

The previous prime is 210201022002031. The next prime is 210201022002149. The reversal of 210201022002121 is 121200220102012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210201022002121 - 2³⁹ = 209651266188233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201022002095 and 210201022002104.

It is not an unprimeable number, because it can be changed into a prime (210201022402121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743087990 + ... + 1743208576.

It is an arithmetic number, because the mean of its divisors is an integer number (13288870917504).

Almost surely, 2^{210201022002121} is an apocalyptic number.

It is an amenable number.

210201022002121 is a deficient number, since it is larger than the sum of its proper divisors (2420912677943).

210201022002121 is a wasteful number, since it uses less digits than its factorization.

210201022002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161360.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210201022002121 its reverse (121200220102012), we get a palindrome (331401242104133).

The spelling of 210201022002121 in words is "two hundred ten trillion, two hundred one billion, twenty-two million, two thousand, one hundred twenty-one".