221234121224 has 16 divisors (see below), whose sum is σ = 414970728000. Its totient is φ = 110575260432.

The previous prime is 221234121211. The next prime is 221234121313. The reversal of 221234121224 is 422121432122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221234121193 and 221234121202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5202524 + ... + 5244875.

It is an arithmetic number, because the mean of its divisors is an integer number (25935670500).

Almost surely, 2^221234121224 is an apocalyptic number.

It is an amenable number.

221234121224 is a deficient number, since it is larger than the sum of its proper divisors (193736606776).

221234121224 is a wasteful number, since it uses less digits than its factorization.

221234121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450052 (or 10450048 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 221234121224 its reverse (422121432122), we get a palindrome (643355553346).

The spelling of 221234121224 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred twenty-one thousand, two hundred twenty-four".