21100211003223 has 24 divisors (see below), whose sum is σ = 34694418096000. Its totient is φ = 12232006377360.

The previous prime is 21100211003153. The next prime is 21100211003233. The reversal of 21100211003223 is 32230011200112.

It is not a de Polignac number, because 21100211003223 - 2⁸ = 21100211002967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21100211003196 and 21100211003205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100211003233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4633333473 + ... + 4633338026.

It is an arithmetic number, because the mean of its divisors is an integer number (1445600754000).

Almost surely, 2^{21100211003223} is an apocalyptic number.

21100211003223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21100211003223 is a deficient number, since it is larger than the sum of its proper divisors (13594207092777).

21100211003223 is a wasteful number, since it uses less digits than its factorization.

21100211003223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266671539 (or 9266671536 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21100211003223 its reverse (32230011200112), we get a palindrome (53330222203335).

The spelling of 21100211003223 in words is "twenty-one trillion, one hundred billion, two hundred eleven million, three thousand, two hundred twenty-three".