210201020121 has 8 divisors (see below), whose sum is σ = 280313616064. Its totient is φ = 140111218800.

The previous prime is 210201020093. The next prime is 210201020173. The reversal of 210201020121 is 121020102012.

210201020121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210201020121 - 2⁵ = 210201020089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201020097 and 210201020106.

It is not an unprimeable number, because it can be changed into a prime (210201020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5677126 + ... + 5714031.

It is an arithmetic number, because the mean of its divisors is an integer number (35039202008).

Almost surely, 2^210201020121 is an apocalyptic number.

It is an amenable number.

210201020121 is a deficient number, since it is larger than the sum of its proper divisors (70112595943).

210201020121 is a wasteful number, since it uses less digits than its factorization.

210201020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11397311.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210201020121 its reverse (121020102012), we get a palindrome (331221122133).

The spelling of 210201020121 in words is "two hundred ten billion, two hundred one million, twenty thousand, one hundred twenty-one".