222123110143243 has 4 divisors (see below), whose sum is σ = 226849133763360. Its totient is φ = 217397086523128.

The previous prime is 222123110143157. The next prime is 222123110143267. The reversal of 222123110143243 is 342341011321222.

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

It is a de Polignac number, because none of the positive numbers 2^k-222123110143243 is a prime.

It is a super-2 number, since 2×222123110143243² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222123110143043) 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, 2363011809988 + ... + 2363011810081.

It is an arithmetic number, because the mean of its divisors is an integer number (56712283440840).

Almost surely, 2^{222123110143243} is an apocalyptic number.

222123110143243 is a deficient number, since it is larger than the sum of its proper divisors (4726023620117).

222123110143243 is an equidigital number, since it uses as much as digits as its factorization.

222123110143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726023620116.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 222123110143243 its reverse (342341011321222), we get a palindrome (564464121464465).

The spelling of 222123110143243 in words is "two hundred twenty-two trillion, one hundred twenty-three billion, one hundred ten million, one hundred forty-three thousand, two hundred forty-three".