1121071201 has 4 divisors (see below), whose sum is σ = 1121434900. Its totient is φ = 1120707504.

The previous prime is 1121071163. The next prime is 1121071223. The reversal of 1121071201 is 1021701211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 209091600 + 911979601 = 14460^2 + 30199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121071201 - 2⁹ = 1121070689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121071901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177186 + ... + 183403.

It is an arithmetic number, because the mean of its divisors is an integer number (280358725).

Almost surely, 2^1121071201 is an apocalyptic number.

It is an amenable number.

1121071201 is a deficient number, since it is larger than the sum of its proper divisors (363699).

1121071201 is an equidigital number, since it uses as much as digits as its factorization.

1121071201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363698.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 1121071201 is about 33482.4013625068. The cubic root of 1121071201 is about 1038.8297984970.

Adding to 1121071201 its reverse (1021701211), we get a palindrome (2142772412).

The spelling of 1121071201 in words is "one billion, one hundred twenty-one million, seventy-one thousand, two hundred one".