20201213333221 has 8 divisors (see below), whose sum is σ = 20631959752320. Its totient is φ = 19770505804608.

The previous prime is 20201213333219. The next prime is 20201213333281. The reversal of 20201213333221 is 12233331210202.

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

It is a cyclic number.

It is not a de Polignac number, because 20201213333221 - 2¹ = 20201213333219 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 (20201213333281) 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, 8671471 + ... + 10751596.

It is an arithmetic number, because the mean of its divisors is an integer number (2578994969040).

Almost surely, 2^{20201213333221} is an apocalyptic number.

It is an amenable number.

20201213333221 is a deficient number, since it is larger than the sum of its proper divisors (430746419099).

20201213333221 is a wasteful number, since it uses less digits than its factorization.

20201213333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19445243.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20201213333221 its reverse (12233331210202), we get a palindrome (32434544543423).

The spelling of 20201213333221 in words is "twenty trillion, two hundred one billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred twenty-one".