1121530061 has 2 divisors, whose sum is σ = 1121530062. Its totient is φ = 1121530060.

The previous prime is 1121530009. The next prime is 1121530097. The reversal of 1121530061 is 1600351211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694322500 + 427207561 = 26350^2 + 20669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121530061 - 2¹⁰ = 1121529037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121530561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560765030 + 560765031.

It is an arithmetic number, because the mean of its divisors is an integer number (560765031).

Almost surely, 2^1121530061 is an apocalyptic number.

It is an amenable number.

1121530061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121530061 is an equidigital number, since it uses as much as digits as its factorization.

1121530061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1121530061 is about 33489.2529179138. The cubic root of 1121530061 is about 1038.9715118929.

Adding to 1121530061 its reverse (1600351211), we get a palindrome (2721881272).

The spelling of 1121530061 in words is "one billion, one hundred twenty-one million, five hundred thirty thousand, sixty-one".