221222231123 has 16 divisors (see below), whose sum is σ = 235406979360. Its totient is φ = 207168192000.

The previous prime is 221222231117. The next prime is 221222231141. The reversal of 221222231123 is 321132222122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221222231123 - 2¹² = 221222227027 is a prime.

It is a super-2 number, since 2×221222231123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222230123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22338473 + ... + 22348373.

It is an arithmetic number, because the mean of its divisors is an integer number (14712936210).

Almost surely, 2^221222231123 is an apocalyptic number.

221222231123 is a deficient number, since it is larger than the sum of its proper divisors (14184748237).

221222231123 is a wasteful number, since it uses less digits than its factorization.

221222231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16358.

The product of its digits is 1152, while the sum is 23.

Adding to 221222231123 its reverse (321132222122), we get a palindrome (542354453245).

Subtracting 221222231123 from its reverse (321132222122), we obtain a palindrome (99909990999).

The spelling of 221222231123 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred thirty-one thousand, one hundred twenty-three".