1072184221 has 2 divisors, whose sum is σ = 1072184222. Its totient is φ = 1072184220.

The previous prime is 1072184219. The next prime is 1072184227. The reversal of 1072184221 is 1224812701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 676572121 + 395612100 = 26011^2 + 19890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072184221 - 2¹ = 1072184219 is a prime.

It is a super-2 number, since 2×1072184221² = 2299158007522753682, which contains 22 as substring.

Together with 1072184219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1072184221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1072184227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536092110 + 536092111.

It is an arithmetic number, because the mean of its divisors is an integer number (536092111).

Almost surely, 2^1072184221 is an apocalyptic number.

It is an amenable number.

1072184221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072184221 is an equidigital number, since it uses as much as digits as its factorization.

1072184221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1072184221 is about 32744.2242387875. The cubic root of 1072184221 is about 1023.5046117221.

Adding to 1072184221 its reverse (1224812701), we get a palindrome (2296996922).

The spelling of 1072184221 in words is "one billion, seventy-two million, one hundred eighty-four thousand, two hundred twenty-one".