21333200020021 has 8 divisors (see below), whose sum is σ = 21336302341440. Its totient is φ = 21330097905312.

The previous prime is 21333200020003. The next prime is 21333200020051. The reversal of 21333200020021 is 12002000233312.

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 21333200020021 - 2¹¹ = 21333200017973 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 (21333200020051) 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, 448973361 + ... + 449020873.

It is an arithmetic number, because the mean of its divisors is an integer number (2667037792680).

Almost surely, 2^{21333200020021} is an apocalyptic number.

It is an amenable number.

21333200020021 is a deficient number, since it is larger than the sum of its proper divisors (3102321419).

21333200020021 is an equidigital number, since it uses as much as digits as its factorization.

21333200020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103355.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21333200020021 its reverse (12002000233312), we get a palindrome (33335200253333).

The spelling of 21333200020021 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred million, twenty thousand, twenty-one".