2021332001221 has 8 divisors (see below), whose sum is σ = 2183818500864. Its totient is φ = 1859845419120.

The previous prime is 2021332001207. The next prime is 2021332001243. The reversal of 2021332001221 is 1221002331202.

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

It is not a de Polignac number, because 2021332001221 - 2⁵ = 2021332001189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021332001251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249975181 + ... + 249983266.

It is an arithmetic number, because the mean of its divisors is an integer number (272977312608).

Almost surely, 2^{2021332001221} is an apocalyptic number.

It is an amenable number.

2021332001221 is a deficient number, since it is larger than the sum of its proper divisors (162486499643).

2021332001221 is a wasteful number, since it uses less digits than its factorization.

2021332001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499958771.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2021332001221 its reverse (1221002331202), we get a palindrome (3242334332423).

The spelling of 2021332001221 in words is "two trillion, twenty-one billion, three hundred thirty-two million, one thousand, two hundred twenty-one".