21111200303 has 8 divisors (see below), whose sum is σ = 21189124320. Its totient is φ = 21033341280.

The previous prime is 21111200269. The next prime is 21111200309. The reversal of 21111200303 is 30300211112.

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 21111200303 - 2³⁰ = 20037458479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111200309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690701 + ... + 720617.

It is an arithmetic number, because the mean of its divisors is an integer number (2648640540).

Almost surely, 2^21111200303 is an apocalyptic number.

21111200303 is a deficient number, since it is larger than the sum of its proper divisors (77924017).

21111200303 is a wasteful number, since it uses less digits than its factorization.

21111200303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32497.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21111200303 its reverse (30300211112), we get a palindrome (51411411415).

The spelling of 21111200303 in words is "twenty-one billion, one hundred eleven million, two hundred thousand, three hundred three".