21110133223 has 8 divisors (see below), whose sum is σ = 21310011360. Its totient is φ = 20910368160.

The previous prime is 21110133221. The next prime is 21110133269. The reversal of 21110133223 is 32233101112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21110133223 - 2¹ = 21110133221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21110133223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110133221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373761 + ... + 426517.

It is an arithmetic number, because the mean of its divisors is an integer number (2663751420).

Almost surely, 2^21110133223 is an apocalyptic number.

21110133223 is a deficient number, since it is larger than the sum of its proper divisors (199878137).

21110133223 is a wasteful number, since it uses less digits than its factorization.

21110133223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56537.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21110133223 its reverse (32233101112), we get a palindrome (53343234335).

The spelling of 21110133223 in words is "twenty-one billion, one hundred ten million, one hundred thirty-three thousand, two hundred twenty-three".