21110202000223 has 4 divisors (see below), whose sum is σ = 24125945143120. Its totient is φ = 18094458857328.

The previous prime is 21110202000161. The next prime is 21110202000247. The reversal of 21110202000223 is 32200020201112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21110202000223 - 2¹⁷ = 21110201869151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110202000197 and 21110202000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110202000623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507871571438 + ... + 1507871571451.

It is an arithmetic number, because the mean of its divisors is an integer number (6031486285780).

Almost surely, 2^{21110202000223} is an apocalyptic number.

21110202000223 is a deficient number, since it is larger than the sum of its proper divisors (3015743142897).

21110202000223 is an equidigital number, since it uses as much as digits as its factorization.

21110202000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015743142896.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21110202000223 its reverse (32200020201112), we get a palindrome (53310222201335).

The spelling of 21110202000223 in words is "twenty-one trillion, one hundred ten billion, two hundred two million, two hundred twenty-three", and thus it is an aban number.