1131022001 has 2 divisors, whose sum is σ = 1131022002. Its totient is φ = 1131022000.

The previous prime is 1131021989. The next prime is 1131022007. The reversal of 1131022001 is 1002201311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791578225 + 339443776 = 28135^2 + 18424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131022001 - 2³⁰ = 57280177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1131022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565511000 + 565511001.

It is an arithmetic number, because the mean of its divisors is an integer number (565511001).

Almost surely, 2^1131022001 is an apocalyptic number.

It is an amenable number.

1131022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131022001 is an equidigital number, since it uses as much as digits as its factorization.

1131022001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1131022001 is about 33630.6705404457. The cubic root of 1131022001 is about 1041.8943533804.

Adding to 1131022001 its reverse (1002201311), we get a palindrome (2133223312).

The spelling of 1131022001 in words is "one billion, one hundred thirty-one million, twenty-two thousand, one".