21115334033342 has 8 divisors (see below), whose sum is σ = 31673020870296. Its totient is φ = 10557660409912.

The previous prime is 21115334033179. The next prime is 21115334033347. The reversal of 21115334033342 is 24333043351112.

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

It is a super-2 number, since 2×21115334033342² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21115334033347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3466253 + ... + 7365159.

It is an arithmetic number, because the mean of its divisors is an integer number (3959127608787).

Almost surely, 2^{21115334033342} is an apocalyptic number.

21115334033342 is a deficient number, since it is larger than the sum of its proper divisors (10557686836954).

21115334033342 is a wasteful number, since it uses less digits than its factorization.

21115334033342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606762.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 21115334033342 its reverse (24333043351112), we get a palindrome (45448377384454).

The spelling of 21115334033342 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-four million, thirty-three thousand, three hundred forty-two".