1121203273 has 2 divisors, whose sum is σ = 1121203274. Its totient is φ = 1121203272.

The previous prime is 1121203219. The next prime is 1121203297. The reversal of 1121203273 is 3723021211.

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., 885181504 + 236021769 = 29752^2 + 15363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121203273 - 2¹⁷ = 1121072201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121203073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560601636 + 560601637.

It is an arithmetic number, because the mean of its divisors is an integer number (560601637).

Almost surely, 2^1121203273 is an apocalyptic number.

It is an amenable number.

1121203273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121203273 is an equidigital number, since it uses as much as digits as its factorization.

1121203273 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 1121203273 is about 33484.3735643957. The cubic root of 1121203273 is about 1038.8705913095.

Adding to 1121203273 its reverse (3723021211), we get a palindrome (4844224484).

The spelling of 1121203273 in words is "one billion, one hundred twenty-one million, two hundred three thousand, two hundred seventy-three".