21115503334043 has 8 divisors (see below), whose sum is σ = 21139247984256. Its totient is φ = 21091762014400.

The previous prime is 21115503334031. The next prime is 21115503334049. The reversal of 21115503334043 is 34043330551112.

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 21115503334043 - 2¹⁴ = 21115503317659 is a prime.

It is a super-3 number, since 3×21115503334043³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21115503333994 and 21115503334012.

It is not an unprimeable number, because it can be changed into a prime (21115503334049) 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, 11964758 + ... + 13615668.

It is an arithmetic number, because the mean of its divisors is an integer number (2642405998032).

Almost surely, 2^{21115503334043} is an apocalyptic number.

21115503334043 is a deficient number, since it is larger than the sum of its proper divisors (23744650213).

21115503334043 is a wasteful number, since it uses less digits than its factorization.

21115503334043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665285.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 21115503334043 its reverse (34043330551112), we get a palindrome (55158833885155).

The spelling of 21115503334043 in words is "twenty-one trillion, one hundred fifteen billion, five hundred three million, three hundred thirty-four thousand, forty-three".