21133502216113 has 4 divisors (see below), whose sum is σ = 24152573961280. Its totient is φ = 18114430470948.

The previous prime is 21133502216069. The next prime is 21133502216117. The reversal of 21133502216113 is 31161220533112.

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 not a de Polignac number, because 21133502216113 - 2²¹ = 21133500118961 is a prime.

It is a super-3 number, since 3×21133502216113³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133502216117) 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 3 ways as a sum of consecutive naturals, for example, 1509535872573 + ... + 1509535872586.

It is an arithmetic number, because the mean of its divisors is an integer number (6038143490320).

Almost surely, 2^{21133502216113} is an apocalyptic number.

It is an amenable number.

21133502216113 is a deficient number, since it is larger than the sum of its proper divisors (3019071745167).

21133502216113 is an equidigital number, since it uses as much as digits as its factorization.

21133502216113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019071745166.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 21133502216113 its reverse (31161220533112), we get a palindrome (52294722749225).

The spelling of 21133502216113 in words is "twenty-one trillion, one hundred thirty-three billion, five hundred two million, two hundred sixteen thousand, one hundred thirteen".