21213332320203 has 12 divisors (see below), whose sum is σ = 32443920019368. Its totient is φ = 13310326161600.

The previous prime is 21213332320181. The next prime is 21213332320249. The reversal of 21213332320203 is 30202323331212.

21213332320203 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 332 + 320 + 2 + 0 + 3 = 666.

It is not a de Polignac number, because 21213332320203 - 2²¹ = 21213330223051 is a prime.

It is a super-2 number, since 2×21213332320203² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21213332320283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69324615273 + ... + 69324615578.

It is an arithmetic number, because the mean of its divisors is an integer number (2703660001614).

Almost surely, 2^{21213332320203} is an apocalyptic number.

21213332320203 is a deficient number, since it is larger than the sum of its proper divisors (11230587699165).

21213332320203 is a wasteful number, since it uses less digits than its factorization.

21213332320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138649230874 (or 138649230871 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21213332320203 its reverse (30202323331212), we get a palindrome (51415655651415).

The spelling of 21213332320203 in words is "twenty-one trillion, two hundred thirteen billion, three hundred thirty-two million, three hundred twenty thousand, two hundred three".