210201200020121 has 4 divisors (see below), whose sum is σ = 212861974704000. Its totient is φ = 207540425336244.

The previous prime is 210201200020057. The next prime is 210201200020159. The reversal of 210201200020121 is 121020002102012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210201200020121 - 2⁶ = 210201200020057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210201200020096 and 210201200020105.

It is not an unprimeable number, because it can be changed into a prime (210201200020181) 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 3 ways as a sum of consecutive naturals, for example, 1330387341821 + ... + 1330387341978.

It is an arithmetic number, because the mean of its divisors is an integer number (53215493676000).

Almost surely, 2^{210201200020121} is an apocalyptic number.

It is an amenable number.

210201200020121 is a deficient number, since it is larger than the sum of its proper divisors (2660774683879).

210201200020121 is an equidigital number, since it uses as much as digits as its factorization.

210201200020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660774683878.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210201200020121 its reverse (121020002102012), we get a palindrome (331221202122133).

The spelling of 210201200020121 in words is "two hundred ten trillion, two hundred one billion, two hundred million, twenty thousand, one hundred twenty-one".