21112311100423 has 8 divisors (see below), whose sum is σ = 21370628418048. Its totient is φ = 20854087881144.

The previous prime is 21112311100343. The next prime is 21112311100457. The reversal of 21112311100423 is 32400111321112.

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 21112311100423 - 2¹³ = 21112311092231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112311100394 and 21112311100403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112311103423) 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, 23073061 + ... + 23970622.

It is an arithmetic number, because the mean of its divisors is an integer number (2671328552256).

Almost surely, 2^{21112311100423} is an apocalyptic number.

21112311100423 is a deficient number, since it is larger than the sum of its proper divisors (258317317625).

21112311100423 is an equidigital number, since it uses as much as digits as its factorization.

21112311100423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47049173.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21112311100423 its reverse (32400111321112), we get a palindrome (53512422421535).

The spelling of 21112311100423 in words is "twenty-one trillion, one hundred twelve billion, three hundred eleven million, one hundred thousand, four hundred twenty-three".