1122204221 has 8 divisors (see below), whose sum is σ = 1192018104. Its totient is φ = 1052812800.

The previous prime is 1122204179. The next prime is 1122204227. The reversal of 1122204221 is 1224022211.

It can be written as a sum of positive squares in 4 ways, for example, as 40780996 + 1081423225 = 6386^2 + 32885^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122204221 - 2³⁰ = 48462397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122204221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122204227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100130 + ... + 110771.

It is an arithmetic number, because the mean of its divisors is an integer number (149002263).

Almost surely, 2^1122204221 is an apocalyptic number.

It is an amenable number.

1122204221 is a deficient number, since it is larger than the sum of its proper divisors (69813883).

1122204221 is a wasteful number, since it uses less digits than its factorization.

1122204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211231.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1122204221 is about 33499.3167243751. The cubic root of 1122204221 is about 1039.1796480099.

Adding to 1122204221 its reverse (1224022211), we get a palindrome (2346226432).

The spelling of 1122204221 in words is "one billion, one hundred twenty-two million, two hundred four thousand, two hundred twenty-one".