21120110244003 has 16 divisors (see below), whose sum is σ = 28454233512096. Its totient is φ = 13933068764160.

The previous prime is 21120110243971. The next prime is 21120110244007. The reversal of 21120110244003 is 30044201102112.

It is not a de Polignac number, because 21120110244003 - 2⁵ = 21120110243971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120110244007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2617776 + ... + 7006637.

It is an arithmetic number, because the mean of its divisors is an integer number (1778389594506).

Almost surely, 2^{21120110244003} is an apocalyptic number.

21120110244003 is a deficient number, since it is larger than the sum of its proper divisors (7334123268093).

21120110244003 is an equidigital number, since it uses as much as digits as its factorization.

21120110244003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632054.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21120110244003 its reverse (30044201102112), we get a palindrome (51164311346115).

The spelling of 21120110244003 in words is "twenty-one trillion, one hundred twenty billion, one hundred ten million, two hundred forty-four thousand, three".