2000121020221 has 16 divisors (see below), whose sum is σ = 2067015189888. Its totient is φ = 1934505144000.

The previous prime is 2000121020207. The next prime is 2000121020257. The reversal of 2000121020221 is 1220201210002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2000121020221 - 2¹⁵ = 2000120987453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121020021) 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, 94495 + ... + 2002291.

It is an arithmetic number, because the mean of its divisors is an integer number (129188449368).

Almost surely, 2^{2000121020221} is an apocalyptic number.

It is an amenable number.

2000121020221 is a deficient number, since it is larger than the sum of its proper divisors (66894169667).

2000121020221 is a wasteful number, since it uses less digits than its factorization.

2000121020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908132.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2000121020221 its reverse (1220201210002), we get a palindrome (3220322230223).

The spelling of 2000121020221 in words is "two trillion, one hundred twenty-one million, twenty thousand, two hundred twenty-one".