1121020573 has 2 divisors, whose sum is σ = 1121020574. Its totient is φ = 1121020572.

The previous prime is 1121020519. The next prime is 1121020583. The reversal of 1121020573 is 3750201211.

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., 629156889 + 491863684 = 25083^2 + 22178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121020573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121020583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510286 + 560510287.

It is an arithmetic number, because the mean of its divisors is an integer number (560510287).

Almost surely, 2^1121020573 is an apocalyptic number.

It is an amenable number.

1121020573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121020573 is an equidigital number, since it uses as much as digits as its factorization.

1121020573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1121020573 is about 33481.6453150080. The cubic root of 1121020573 is about 1038.8141602793.

Adding to 1121020573 its reverse (3750201211), we get a palindrome (4871221784).

The spelling of 1121020573 in words is "one billion, one hundred twenty-one million, twenty thousand, five hundred seventy-three".