221224133431123 has 4 divisors (see below), whose sum is σ = 222040458647008. Its totient is φ = 220407808215240.

The previous prime is 221224133431097. The next prime is 221224133431127. The reversal of 221224133431123 is 321134331422122.

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 221224133431123 - 2⁴⁵ = 186039761342291 is a prime.

It is a super-2 number, since 2×221224133431123² (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 (221224133431127) 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, 408162607536 + ... + 408162608077.

It is an arithmetic number, because the mean of its divisors is an integer number (55510114661752).

Almost surely, 2^{221224133431123} is an apocalyptic number.

221224133431123 is a deficient number, since it is larger than the sum of its proper divisors (816325215885).

221224133431123 is an equidigital number, since it uses as much as digits as its factorization.

221224133431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816325215884.

The product of its digits is 41472, while the sum is 34.

Adding to 221224133431123 its reverse (321134331422122), we get a palindrome (542358464853245).

The spelling of 221224133431123 in words is "two hundred twenty-one trillion, two hundred twenty-four billion, one hundred thirty-three million, four hundred thirty-one thousand, one hundred twenty-three".