21112032111223 has 4 divisors (see below), whose sum is σ = 21186632931688. Its totient is φ = 21037431290760.

The previous prime is 21112032111197. The next prime is 21112032111239. The reversal of 21112032111223 is 32211123021112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112032111223 is a prime.

It is a super-2 number, since 2×21112032111223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112032111194 and 21112032111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112032111253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37300409808 + ... + 37300410373.

It is an arithmetic number, because the mean of its divisors is an integer number (5296658232922).

Almost surely, 2^{21112032111223} is an apocalyptic number.

21112032111223 is a deficient number, since it is larger than the sum of its proper divisors (74600820465).

21112032111223 is an equidigital number, since it uses as much as digits as its factorization.

21112032111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74600820464.

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

Adding to 21112032111223 its reverse (32211123021112), we get a palindrome (53323155132335).

The spelling of 21112032111223 in words is "twenty-one trillion, one hundred twelve billion, thirty-two million, one hundred eleven thousand, two hundred twenty-three".