223031221123 has 4 divisors (see below), whose sum is σ = 223032708360. Its totient is φ = 223029733888.

The previous prime is 223031221109. The next prime is 223031221159. The reversal of 223031221123 is 321122130322.

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

It is a cyclic number.

It is not a de Polignac number, because 223031221123 - 2²⁵ = 222997666691 is a prime.

It is a super-2 number, since 2×223031221123² (a number of 23 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 = 223031221094 and 223031221103.

It is not an unprimeable number, because it can be changed into a prime (223031221223) 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, 489793 + ... + 828226.

It is an arithmetic number, because the mean of its divisors is an integer number (55758177090).

Almost surely, 2^223031221123 is an apocalyptic number.

223031221123 is a deficient number, since it is larger than the sum of its proper divisors (1487237).

223031221123 is a wasteful number, since it uses less digits than its factorization.

223031221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487236.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223031221123 its reverse (321122130322), we get a palindrome (544153351445).

The spelling of 223031221123 in words is "two hundred twenty-three billion, thirty-one million, two hundred twenty-one thousand, one hundred twenty-three".