21321111232203 has 32 divisors (see below), whose sum is σ = 30927741931584. Its totient is φ = 13010564616192.

The previous prime is 21321111232189. The next prime is 21321111232231. The reversal of 21321111232203 is 30223211112312.

It is not a de Polignac number, because 21321111232203 - 2⁹ = 21321111231691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21321111232703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1695751 + ... + 6746687.

It is an arithmetic number, because the mean of its divisors is an integer number (966491935362).

Almost surely, 2^{21321111232203} is an apocalyptic number.

21321111232203 is a deficient number, since it is larger than the sum of its proper divisors (9606630699381).

21321111232203 is a wasteful number, since it uses less digits than its factorization.

21321111232203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053231.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21321111232203 its reverse (30223211112312), we get a palindrome (51544322344515).

The spelling of 21321111232203 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred eleven million, two hundred thirty-two thousand, two hundred three".