210201211121121 has 32 divisors (see below), whose sum is σ = 342394082918400. Its totient is φ = 126391565719440.

The previous prime is 210201211121119. The next prime is 210201211121159. The reversal of 210201211121121 is 121121112102012.

It is a happy number.

210201211121121 is a `hidden beast` number, since 2 + 10 + 201 + 211 + 121 + 121 = 666.

210201211121121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210201211121121 - 2¹ = 210201211121119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210201211121094 and 210201211121103.

It is not an unprimeable number, because it can be changed into a prime (210201210121121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2786372461 + ... + 2786447898.

It is an arithmetic number, because the mean of its divisors is an integer number (10699815091200).

Almost surely, 2^{210201211121121} is an apocalyptic number.

It is an amenable number.

210201211121121 is a deficient number, since it is larger than the sum of its proper divisors (132192871797279).

210201211121121 is a wasteful number, since it uses less digits than its factorization.

210201211121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572820506 (or 5572820500 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 210201211121121 its reverse (121121112102012), we get a palindrome (331322323223133).

The spelling of 210201211121121 in words is "two hundred ten trillion, two hundred one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".