1321120041 has 8 divisors (see below), whose sum is σ = 1763176800. Its totient is φ = 879904992.

The previous prime is 1321120013. The next prime is 1321120043. The reversal of 1321120041 is 1400211231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321120041 - 2¹⁰ = 1321119017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321120041.

It is not an unprimeable number, because it can be changed into a prime (1321120043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206755 + ... + 213048.

It is an arithmetic number, because the mean of its divisors is an integer number (220397100).

Almost surely, 2^1321120041 is an apocalyptic number.

It is an amenable number.

1321120041 is a deficient number, since it is larger than the sum of its proper divisors (442056759).

1321120041 is a wasteful number, since it uses less digits than its factorization.

1321120041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420855.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1321120041 is about 36347.2150377440. The cubic root of 1321120041 is about 1097.2714858147.

Adding to 1321120041 its reverse (1400211231), we get a palindrome (2721331272).

The spelling of 1321120041 in words is "one billion, three hundred twenty-one million, one hundred twenty thousand, forty-one".