1424200221 has 12 divisors (see below), whose sum is σ = 2058018300. Its totient is φ = 949079040.

The previous prime is 1424200207. The next prime is 1424200241. The reversal of 1424200221 is 1220024241.

1424200221 is a `hidden beast` number, since 1 + 424 + 20 + 0 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 639584100 + 784616121 = 25290^2 + 28011^2 .

It is not a de Polignac number, because 1424200221 - 2¹⁰ = 1424199197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1424200194 and 1424200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424200201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8100 + ... + 53981.

It is an arithmetic number, because the mean of its divisors is an integer number (171501525).

Almost surely, 2^1424200221 is an apocalyptic number.

It is an amenable number.

1424200221 is a deficient number, since it is larger than the sum of its proper divisors (633818079).

1424200221 is a wasteful number, since it uses less digits than its factorization.

1424200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64636 (or 64633 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1424200221 is about 37738.5773579238. The cubic root of 1424200221 is about 1125.0979920568.

Adding to 1424200221 its reverse (1220024241), we get a palindrome (2644224462).

The spelling of 1424200221 in words is "one billion, four hundred twenty-four million, two hundred thousand, two hundred twenty-one".