21113030302203 has 16 divisors (see below), whose sum is σ = 32175712396800. Its totient is φ = 12063285339456.

The previous prime is 21113030302193. The next prime is 21113030302207. The reversal of 21113030302203 is 30220303031112.

It is not a de Polignac number, because 21113030302203 - 2¹⁴ = 21113030285819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21113030302203.

It is not an unprimeable number, because it can be changed into a prime (21113030302207) 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, 54109503 + ... + 54498296.

It is an arithmetic number, because the mean of its divisors is an integer number (2010982024800).

Almost surely, 2^{21113030302203} is an apocalyptic number.

21113030302203 is a deficient number, since it is larger than the sum of its proper divisors (11062682094597).

21113030302203 is a wasteful number, since it uses less digits than its factorization.

21113030302203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108617066.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21113030302203 its reverse (30220303031112), we get a palindrome (51333333333315).

The spelling of 21113030302203 in words is "twenty-one trillion, one hundred thirteen billion, thirty million, three hundred two thousand, two hundred three".