221412124 has 6 divisors (see below), whose sum is σ = 387471224. Its totient is φ = 110706060.

The previous prime is 221412119. The next prime is 221412133. The reversal of 221412124 is 421214122.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27676512 + ... + 27676519.

Almost surely, 2^221412124 is an apocalyptic number.

It is an amenable number.

221412124 is a deficient number, since it is larger than the sum of its proper divisors (166059100).

221412124 is a wasteful number, since it uses less digits than its factorization.

221412124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55353035 (or 55353033 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 221412124 is about 14879.9235213088. The cubic root of 221412124 is about 604.9699450042.

Adding to 221412124 its reverse (421214122), we get a palindrome (642626246).

The spelling of 221412124 in words is "two hundred twenty-one million, four hundred twelve thousand, one hundred twenty-four".