1121313229 has 2 divisors, whose sum is σ = 1121313230. Its totient is φ = 1121313228.

The previous prime is 1121313197. The next prime is 1121313247. The reversal of 1121313229 is 9223131211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047816900 + 73496329 = 32370^2 + 8573^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121313229 - 2⁵ = 1121313197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121313269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656614 + 560656615.

It is an arithmetic number, because the mean of its divisors is an integer number (560656615).

Almost surely, 2^1121313229 is an apocalyptic number.

It is an amenable number.

1121313229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121313229 is an equidigital number, since it uses as much as digits as its factorization.

1121313229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 1121313229 is about 33486.0154243529. The cubic root of 1121313229 is about 1038.9045507539.

It can be divided in two parts, 11213 and 13229, that added together give a palindrome (24442).

The spelling of 1121313229 in words is "one billion, one hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-nine".