2000217001221 has 24 divisors (see below), whose sum is σ = 2971400271840. Its totient is φ = 1295855328096.

The previous prime is 2000217001163. The next prime is 2000217001229. The reversal of 2000217001221 is 1221007120002.

It is a happy number.

It is not a de Polignac number, because 2000217001221 - 2¹⁷ = 2000216870149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000217001194 and 2000217001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000217001229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13041831 + ... + 13194308.

It is an arithmetic number, because the mean of its divisors is an integer number (123808344660).

Almost surely, 2^{2000217001221} is an apocalyptic number.

It is an amenable number.

2000217001221 is a deficient number, since it is larger than the sum of its proper divisors (971183270619).

2000217001221 is a wasteful number, since it uses less digits than its factorization.

2000217001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26236385 (or 26236382 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The spelling of 2000217001221 in words is "two trillion, two hundred seventeen million, one thousand, two hundred twenty-one".