1001312421 has 8 divisors (see below), whose sum is σ = 1337826624. Its totient is φ = 666169920.

The previous prime is 1001312381. The next prime is 1001312437. The reversal of 1001312421 is 1242131001.

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

It is not a de Polignac number, because 1001312421 - 2¹⁹ = 1000788133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001312441) 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, 341220 + ... + 344141.

It is an arithmetic number, because the mean of its divisors is an integer number (167228328).

Almost surely, 2^1001312421 is an apocalyptic number.

It is an amenable number.

1001312421 is a deficient number, since it is larger than the sum of its proper divisors (336514203).

1001312421 is an equidigital number, since it uses as much as digits as its factorization.

1001312421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685851.

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

The square root of 1001312421 is about 31643.5209956161. The cubic root of 1001312421 is about 1000.4372824229.

Adding to 1001312421 its reverse (1242131001), we get a palindrome (2243443422).

The spelling of 1001312421 in words is "one billion, one million, three hundred twelve thousand, four hundred twenty-one".