221122031123 has 8 divisors (see below), whose sum is σ = 252714032640. Its totient is φ = 189530814600.

The previous prime is 221122031113. The next prime is 221122031129. The reversal of 221122031123 is 321130221122.

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 221122031123 - 2⁶ = 221122031059 is a prime.

It is a super-2 number, since 2×221122031123² (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 = 221122031095 and 221122031104.

It is not an unprimeable number, because it can be changed into a prime (221122031129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651548 + ... + 930998.

It is an arithmetic number, because the mean of its divisors is an integer number (31589254080).

Almost surely, 2^221122031123 is an apocalyptic number.

221122031123 is a deficient number, since it is larger than the sum of its proper divisors (31592001517).

221122031123 is a wasteful number, since it uses less digits than its factorization.

221122031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392497.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221122031123 its reverse (321130221122), we get a palindrome (542252252245).

The spelling of 221122031123 in words is "two hundred twenty-one billion, one hundred twenty-two million, thirty-one thousand, one hundred twenty-three".