221123103124 has 24 divisors (see below), whose sum is σ = 482450407488. Its totient is φ = 86151858240.

The previous prime is 221123103101. The next prime is 221123103127. The reversal of 221123103124 is 421301321122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221123103095 and 221123103104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221123103127) 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, 358965769 + ... + 358966384.

It is an arithmetic number, because the mean of its divisors is an integer number (20102100312).

Almost surely, 2^221123103124 is an apocalyptic number.

It is an amenable number.

221123103124 is an abundant number, since it is smaller than the sum of its proper divisors (261327304364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221123103124 is a wasteful number, since it uses less digits than its factorization.

221123103124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717932175 (or 717932173 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221123103124 its reverse (421301321122), we get a palindrome (642424424246).

The spelling of 221123103124 in words is "two hundred twenty-one billion, one hundred twenty-three million, one hundred three thousand, one hundred twenty-four".