21118333583371 has 4 divisors (see below), whose sum is σ = 21167105716792. Its totient is φ = 21069561449952.

The previous prime is 21118333583353. The next prime is 21118333583401. The reversal of 21118333583371 is 17338533381112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21118333583371 - 2¹⁷ = 21118333452299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21118333583311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24386066061 + ... + 24386066926.

It is an arithmetic number, because the mean of its divisors is an integer number (5291776429198).

Almost surely, 2^{21118333583371} is an apocalyptic number.

21118333583371 is a deficient number, since it is larger than the sum of its proper divisors (48772133421).

21118333583371 is an equidigital number, since it uses as much as digits as its factorization.

21118333583371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48772133420.

The product of its digits is 1088640, while the sum is 49.

The spelling of 21118333583371 in words is "twenty-one trillion, one hundred eighteen billion, three hundred thirty-three million, five hundred eighty-three thousand, three hundred seventy-one".