2121010020201 has 16 divisors (see below), whose sum is σ = 2931768552960. Its totient is φ = 1362520613760.

The previous prime is 2121010020197. The next prime is 2121010020203. The reversal of 2121010020201 is 1020200101212.

It is not a de Polignac number, because 2121010020201 - 2² = 2121010020197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121010020203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48919446 + ... + 48962783.

It is an arithmetic number, because the mean of its divisors is an integer number (183235534560).

Almost surely, 2^{2121010020201} is an apocalyptic number.

It is an amenable number.

2121010020201 is a deficient number, since it is larger than the sum of its proper divisors (810758532759).

2121010020201 is a wasteful number, since it uses less digits than its factorization.

2121010020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97882496.

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

Adding to 2121010020201 its reverse (1020200101212), we get a palindrome (3141210121413).

The spelling of 2121010020201 in words is "two trillion, one hundred twenty-one billion, ten million, twenty thousand, two hundred one".