21112011323 has 8 divisors (see below), whose sum is σ = 24073424928. Its totient is φ = 18341656704.

The previous prime is 21112011317. The next prime is 21112011331. The reversal of 21112011323 is 32311021112.

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

It is a cyclic number.

It is not a de Polignac number, because 21112011323 - 2¹⁰ = 21112010299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112017323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47764511 + ... + 47764952.

It is an arithmetic number, because the mean of its divisors is an integer number (3009178116).

Almost surely, 2^21112011323 is an apocalyptic number.

21112011323 is a deficient number, since it is larger than the sum of its proper divisors (2961413605).

21112011323 is a wasteful number, since it uses less digits than its factorization.

21112011323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95529493.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21112011323 its reverse (32311021112), we get a palindrome (53423032435).

The spelling of 21112011323 in words is "twenty-one billion, one hundred twelve million, eleven thousand, three hundred twenty-three".