1122330821 has 2 divisors, whose sum is σ = 1122330822. Its totient is φ = 1122330820.

The previous prime is 1122330799. The next prime is 1122330829. The reversal of 1122330821 is 1280332211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815730721 + 306600100 = 28561^2 + 17510^2 .

It is an emirp because it is prime and its reverse (1280332211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122330821 - 2⁶ = 1122330757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122330829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561165410 + 561165411.

It is an arithmetic number, because the mean of its divisors is an integer number (561165411).

Almost surely, 2^1122330821 is an apocalyptic number.

It is an amenable number.

1122330821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122330821 is an equidigital number, since it uses as much as digits as its factorization.

1122330821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1122330821 is about 33501.2062618647. The cubic root of 1122330821 is about 1039.2187244377.

The spelling of 1122330821 in words is "one billion, one hundred twenty-two million, three hundred thirty thousand, eight hundred twenty-one".