21013222133 has 16 divisors (see below), whose sum is σ = 21803040000. Its totient is φ = 20237022720.

The previous prime is 21013222049. The next prime is 21013222157. The reversal of 21013222133 is 33122231012.

It is a de Polignac number, because none of the positive numbers 2^k-21013222133 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 (21013222183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6801053 + ... + 6804141.

It is an arithmetic number, because the mean of its divisors is an integer number (1362690000).

Almost surely, 2^21013222133 is an apocalyptic number.

It is an amenable number.

21013222133 is a deficient number, since it is larger than the sum of its proper divisors (789817867).

21013222133 is a wasteful number, since it uses less digits than its factorization.

21013222133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21013222133 its reverse (33122231012), we get a palindrome (54135453145).

The spelling of 21013222133 in words is "twenty-one billion, thirteen million, two hundred twenty-two thousand, one hundred thirty-three".