2021000212221 has 8 divisors (see below), whose sum is σ = 2694795577440. Its totient is φ = 1347269160912.

The previous prime is 2021000212213. The next prime is 2021000212229. The reversal of 2021000212221 is 1222120001202.

It is an interprime number because it is at equal distance from previous prime (2021000212213) and next prime (2021000212229).

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

It is not a de Polignac number, because 2021000212221 - 2³ = 2021000212213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021000212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021000212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16005106 + ... + 16130883.

It is an arithmetic number, because the mean of its divisors is an integer number (336849447180).

Almost surely, 2^{2021000212221} is an apocalyptic number.

It is an amenable number.

2021000212221 is a deficient number, since it is larger than the sum of its proper divisors (673795365219).

2021000212221 is a wasteful number, since it uses less digits than its factorization.

2021000212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32156955.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021000212221 its reverse (1222120001202), we get a palindrome (3243120213423).

The spelling of 2021000212221 in words is "two trillion, twenty-one billion, two hundred twelve thousand, two hundred twenty-one".