1121320001 has 4 divisors (see below), whose sum is σ = 1121394372. Its totient is φ = 1121245632.

The previous prime is 1121319971. The next prime is 1121320007. The reversal of 1121320001 is 1000231211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 399000625 + 722319376 = 19975^2 + 26876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121320001 - 2²² = 1117125697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121320007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5660 + ... + 47693.

It is an arithmetic number, because the mean of its divisors is an integer number (280348593).

Almost surely, 2^1121320001 is an apocalyptic number.

It is an amenable number.

1121320001 is a deficient number, since it is larger than the sum of its proper divisors (74371).

1121320001 is an equidigital number, since it uses as much as digits as its factorization.

1121320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370.

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

The square root of 1121320001 is about 33486.1165410383. The cubic root of 1121320001 is about 1038.9066421848.

Adding to 1121320001 its reverse (1000231211), we get a palindrome (2121551212).

The spelling of 1121320001 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, one".