21983175294203 has 4 divisors (see below), whose sum is σ = 21996114186600. Its totient is φ = 21970236401808.

The previous prime is 21983175294167. The next prime is 21983175294271. The reversal of 21983175294203 is 30249257138912.

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 21983175294203 - 2¹² = 21983175290107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21983175204203) 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, 6469443650 + ... + 6469447047.

It is an arithmetic number, because the mean of its divisors is an integer number (5499028546650).

Almost surely, 2^{21983175294203} is an apocalyptic number.

21983175294203 is a deficient number, since it is larger than the sum of its proper divisors (12938892397).

21983175294203 is a wasteful number, since it uses less digits than its factorization.

21983175294203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938892396.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 21983175294203 in words is "twenty-one trillion, nine hundred eighty-three billion, one hundred seventy-five million, two hundred ninety-four thousand, two hundred three".