21113210312223 has 32 divisors (see below), whose sum is σ = 28691046912000. Its totient is φ = 13807773379296.

The previous prime is 21113210312203. The next prime is 21113210312237. The reversal of 21113210312223 is 32221301231112.

It is not a de Polignac number, because 21113210312223 - 2⁸ = 21113210311967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21113210312193 and 21113210312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113210312203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127360836 + ... + 127526502.

It is an arithmetic number, because the mean of its divisors is an integer number (896595216000).

Almost surely, 2^{21113210312223} is an apocalyptic number.

21113210312223 is a deficient number, since it is larger than the sum of its proper divisors (7577836599777).

21113210312223 is a wasteful number, since it uses less digits than its factorization.

21113210312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169211.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21113210312223 its reverse (32221301231112), we get a palindrome (53334511543335).

The spelling of 21113210312223 in words is "twenty-one trillion, one hundred thirteen billion, two hundred ten million, three hundred twelve thousand, two hundred twenty-three".