1121234321 has 2 divisors, whose sum is σ = 1121234322. Its totient is φ = 1121234320.

The previous prime is 1121234267. The next prime is 1121234333. The reversal of 1121234321 is 1234321211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079451025 + 41783296 = 32855^2 + 6464^2 .

It is an emirp because it is prime and its reverse (1234321211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121234321 - 2¹⁰ = 1121233297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121234293 and 1121234302.

It is not a weakly prime, because it can be changed into another prime (1121234921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560617160 + 560617161.

It is an arithmetic number, because the mean of its divisors is an integer number (560617161).

Almost surely, 2^1121234321 is an apocalyptic number.

It is an amenable number.

1121234321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121234321 is an equidigital number, since it uses as much as digits as its factorization.

1121234321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 1121234321 is about 33484.8371804314. The cubic root of 1121234321 is about 1038.8801805776.

Adding to 1121234321 its reverse (1234321211), we get a palindrome (2355555532).

The spelling of 1121234321 in words is "one billion, one hundred twenty-one million, two hundred thirty-four thousand, three hundred twenty-one".