21113222203203 has 16 divisors (see below), whose sum is σ = 30317240352000. Its totient is φ = 12992401242144.

The previous prime is 21113222203189. The next prime is 21113222203243. The reversal of 21113222203203 is 30230222231112.

It is not a de Polignac number, because 21113222203203 - 2⁹ = 21113222202691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113222203243) 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, 5843703 + ... + 8739296.

It is an arithmetic number, because the mean of its divisors is an integer number (1894827522000).

Almost surely, 2^{21113222203203} is an apocalyptic number.

21113222203203 is a deficient number, since it is larger than the sum of its proper divisors (9204018148797).

21113222203203 is a wasteful number, since it uses less digits than its factorization.

21113222203203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14620138.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21113222203203 its reverse (30230222231112), we get a palindrome (51343444434315).

The spelling of 21113222203203 in words is "twenty-one trillion, one hundred thirteen billion, two hundred twenty-two million, two hundred three thousand, two hundred three".