2121010220201 has 8 divisors (see below), whose sum is σ = 2128867524264. Its totient is φ = 2113162168320.

The previous prime is 2121010220143. The next prime is 2121010220257. The reversal of 2121010220201 is 1020220101212.

It can be written as a sum of positive squares in 4 ways, for example, as 17497998400 + 2103512221801 = 132280^2 + 1450349^2 .

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 2121010220201 - 2¹⁰ = 2121010219177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121010220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853540 + ... + 2770853.

It is an arithmetic number, because the mean of its divisors is an integer number (266108440533).

Almost surely, 2^{2121010220201} is an apocalyptic number.

It is an amenable number.

2121010220201 is a deficient number, since it is larger than the sum of its proper divisors (7857304063).

2121010220201 is a wasteful number, since it uses less digits than its factorization.

2121010220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4626091.

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

Adding to 2121010220201 its reverse (1020220101212), we get a palindrome (3141230321413).

The spelling of 2121010220201 in words is "two trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, two hundred one".