21115333015133 has 8 divisors (see below), whose sum is σ = 24174220077120. Its totient is φ = 18067048682400.

The previous prime is 21115333015097. The next prime is 21115333015141. The reversal of 21115333015133 is 33151033351112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21115333015133 - 2⁶ = 21115333015069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21115333015133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21115333012133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650678043 + ... + 2650686008.

It is an arithmetic number, because the mean of its divisors is an integer number (3021777509640).

Almost surely, 2^{21115333015133} is an apocalyptic number.

It is an amenable number.

21115333015133 is a deficient number, since it is larger than the sum of its proper divisors (3058887061987).

21115333015133 is an equidigital number, since it uses as much as digits as its factorization.

21115333015133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5301364627.

The product of its (nonzero) digits is 12150, while the sum is 32.

Adding to 21115333015133 its reverse (33151033351112), we get a palindrome (54266366366245).

The spelling of 21115333015133 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-three million, fifteen thousand, one hundred thirty-three".