2121001010201 has 8 divisors (see below), whose sum is σ = 2194158818880. Its totient is φ = 2047844524432.

The previous prime is 2121001010173. The next prime is 2121001010213. The reversal of 2121001010201 is 1020101001212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121001010201 - 2¹⁰ = 2121001009177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121001010251) 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, 3809996 + ... + 4331058.

It is an arithmetic number, because the mean of its divisors is an integer number (274269852360).

Almost surely, 2^{2121001010201} is an apocalyptic number.

It is an amenable number.

2121001010201 is a deficient number, since it is larger than the sum of its proper divisors (73157808679).

2121001010201 is a wasteful number, since it uses less digits than its factorization.

2121001010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661455.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2121001010201 its reverse (1020101001212), we get a palindrome (3141102011413).

The spelling of 2121001010201 in words is "two trillion, one hundred twenty-one billion, one million, ten thousand, two hundred one".