21100033313223 has 24 divisors (see below), whose sum is σ = 29985994125936. Its totient is φ = 13194392832000.

The previous prime is 21100033313221. The next prime is 21100033313237. The reversal of 21100033313223 is 32231333000112.

It is not a de Polignac number, because 21100033313223 - 2¹ = 21100033313221 is a prime.

It is a super-2 number, since 2×21100033313223² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21100033313193 and 21100033313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100033313221) 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, 96340858 + ... + 96559623.

It is an arithmetic number, because the mean of its divisors is an integer number (1249416421914).

Almost surely, 2^{21100033313223} is an apocalyptic number.

21100033313223 is a deficient number, since it is larger than the sum of its proper divisors (8885960812713).

21100033313223 is a wasteful number, since it uses less digits than its factorization.

21100033313223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192900623 (or 192900604 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21100033313223 its reverse (32231333000112), we get a palindrome (53331366313335).

The spelling of 21100033313223 in words is "twenty-one trillion, one hundred billion, thirty-three million, three hundred thirteen thousand, two hundred twenty-three".