1121320237 has 2 divisors, whose sum is σ = 1121320238. Its totient is φ = 1121320236.

The previous prime is 1121320199. The next prime is 1121320259. The reversal of 1121320237 is 7320231211.

It is a happy number.

It is an a-pointer prime, because the next prime (1121320259) can be obtained adding 1121320237 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675012361 + 446307876 = 25981^2 + 21126^2 .

It is an emirp because it is prime and its reverse (7320231211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121320237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121320297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560660118 + 560660119.

It is an arithmetic number, because the mean of its divisors is an integer number (560660119).

Almost surely, 2^1121320237 is an apocalyptic number.

It is an amenable number.

1121320237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121320237 is an equidigital number, since it uses as much as digits as its factorization.

1121320237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1121320237 is about 33486.1200648866. The cubic root of 1121320237 is about 1038.9067150697.

Adding to 1121320237 its reverse (7320231211), we get a palindrome (8441551448).

The spelling of 1121320237 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, two hundred thirty-seven".