21112033313 has 4 divisors (see below), whose sum is σ = 24128038080. Its totient is φ = 18096028548.

The previous prime is 21112033297. The next prime is 21112033343. The reversal of 21112033313 is 31333021112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21112033313 - 2⁴ = 21112033297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112033343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508002373 + ... + 1508002386.

It is an arithmetic number, because the mean of its divisors is an integer number (6032009520).

Almost surely, 2^21112033313 is an apocalyptic number.

It is an amenable number.

21112033313 is a deficient number, since it is larger than the sum of its proper divisors (3016004767).

21112033313 is an equidigital number, since it uses as much as digits as its factorization.

21112033313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016004766.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21112033313 its reverse (31333021112), we get a palindrome (52445054425).

The spelling of 21112033313 in words is "twenty-one billion, one hundred twelve million, thirty-three thousand, three hundred thirteen".