21133223321313 has 16 divisors (see below), whose sum is σ = 28688358101120. Its totient is φ = 13835137613184.

The previous prime is 21133223321269. The next prime is 21133223321381. The reversal of 21133223321313 is 31312332233112.

It is not a de Polignac number, because 21133223321313 - 2⁸ = 21133223321057 is a prime.

It is a super-2 number, since 2×21133223321313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133223321383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210645781 + ... + 210746082.

It is an arithmetic number, because the mean of its divisors is an integer number (1793022381320).

Almost surely, 2^{21133223321313} is an apocalyptic number.

It is an amenable number.

21133223321313 is a deficient number, since it is larger than the sum of its proper divisors (7555134779807).

21133223321313 is a wasteful number, since it uses less digits than its factorization.

21133223321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421392168.

The product of its digits is 11664, while the sum is 30.

Adding to 21133223321313 its reverse (31312332233112), we get a palindrome (52445555554425).

The spelling of 21133223321313 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred twenty-three million, three hundred twenty-one thousand, three hundred thirteen".