1321001041 has 4 divisors (see below), whose sum is σ = 1331402752. Its totient is φ = 1310599332.

The previous prime is 1321001029. The next prime is 1321001093. The reversal of 1321001041 is 1401001231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321001041 - 2¹¹ = 1320998993 is a prime.

It is a super-3 number, since 3×1321001041³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321001641) 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, 5200665 + ... + 5200918.

It is an arithmetic number, because the mean of its divisors is an integer number (332850688).

Almost surely, 2^1321001041 is an apocalyptic number.

It is an amenable number.

1321001041 is a deficient number, since it is larger than the sum of its proper divisors (10401711).

1321001041 is a wasteful number, since it uses less digits than its factorization.

1321001041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401710.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1321001041 is about 36345.5780116371. The cubic root of 1321001041 is about 1097.2385392180.

Adding to 1321001041 its reverse (1401001231), we get a palindrome (2722002272).

The spelling of 1321001041 in words is "one billion, three hundred twenty-one million, one thousand, forty-one".