21333345603 has 32 divisors (see below), whose sum is σ = 30103022400. Its totient is φ = 13419012096.

The previous prime is 21333345469. The next prime is 21333345617. The reversal of 21333345603 is 30654333312.

It is not a de Polignac number, because 21333345603 - 2¹² = 21333341507 is a prime.

It is a super-2 number, since 2×21333345603² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21333345643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676851 + ... + 707667.

It is an arithmetic number, because the mean of its divisors is an integer number (940719450).

Almost surely, 2^21333345603 is an apocalyptic number.

21333345603 is a deficient number, since it is larger than the sum of its proper divisors (8769676797).

21333345603 is a wasteful number, since it uses less digits than its factorization.

21333345603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31031.

The product of its (nonzero) digits is 58320, while the sum is 33.

Adding to 21333345603 its reverse (30654333312), we get a palindrome (51987678915).

The spelling of 21333345603 in words is "twenty-one billion, three hundred thirty-three million, three hundred forty-five thousand, six hundred three".