21333542203 has 8 divisors (see below), whose sum is σ = 21372273296. Its totient is φ = 21294835200.

The previous prime is 21333542189. The next prime is 21333542221. The reversal of 21333542203 is 30224533312.

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 21333542203 - 2¹⁷ = 21333411131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333572203) 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, 3115063 + ... + 3121903.

It is an arithmetic number, because the mean of its divisors is an integer number (2671534162).

Almost surely, 2^21333542203 is an apocalyptic number.

21333542203 is a deficient number, since it is larger than the sum of its proper divisors (38731093).

21333542203 is an equidigital number, since it uses as much as digits as its factorization.

21333542203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12045.

The product of its (nonzero) digits is 12960, while the sum is 28.

The spelling of 21333542203 in words is "twenty-one billion, three hundred thirty-three million, five hundred forty-two thousand, two hundred three".