21330433115115 has 16 divisors (see below), whose sum is σ = 34150472659968. Its totient is φ = 11368971102816.

The previous prime is 21330433115111. The next prime is 21330433115129. The reversal of 21330433115115 is 51151133403312.

It is not a de Polignac number, because 21330433115115 - 2² = 21330433115111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21330433115111) 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, 453718957 + ... + 453765966.

It is an arithmetic number, because the mean of its divisors is an integer number (2134404541248).

Almost surely, 2^{21330433115115} is an apocalyptic number.

21330433115115 is a deficient number, since it is larger than the sum of its proper divisors (12820039544853).

21330433115115 is a wasteful number, since it uses less digits than its factorization.

21330433115115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907486498.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 21330433115115 its reverse (51151133403312), we get a palindrome (72481566518427).

The spelling of 21330433115115 in words is "twenty-one trillion, three hundred thirty billion, four hundred thirty-three million, one hundred fifteen thousand, one hundred fifteen".