21220110311203 has 8 divisors (see below), whose sum is σ = 21706955396928. Its totient is φ = 20734738282944.

The previous prime is 21220110311201. The next prime is 21220110311209. The reversal of 21220110311203 is 30211301102212.

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 21220110311203 - 2¹ = 21220110311201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220110311201) 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, 368235226 + ... + 368292847.

It is an arithmetic number, because the mean of its divisors is an integer number (2713369424616).

Almost surely, 2^{21220110311203} is an apocalyptic number.

21220110311203 is a deficient number, since it is larger than the sum of its proper divisors (486845085725).

21220110311203 is an equidigital number, since it uses as much as digits as its factorization.

21220110311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736528733.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21220110311203 its reverse (30211301102212), we get a palindrome (51431411413415).

The spelling of 21220110311203 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, three hundred eleven thousand, two hundred three".