1000201321 has 4 divisors (see below), whose sum is σ = 1143087232. Its totient is φ = 857315412.

The previous prime is 1000201297. The next prime is 1000201339. The reversal of 1000201321 is 1231020001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1231020001 = 139 ⋅8856259.

It is a cyclic number.

It is not a de Polignac number, because 1000201321 - 2⁷ = 1000201193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000201298 and 1000201307.

It is not an unprimeable number, because it can be changed into a prime (1000201351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71442945 + ... + 71442958.

It is an arithmetic number, because the mean of its divisors is an integer number (285771808).

Almost surely, 2^1000201321 is an apocalyptic number.

It is an amenable number.

1000201321 is a deficient number, since it is larger than the sum of its proper divisors (142885911).

1000201321 is an equidigital number, since it uses as much as digits as its factorization.

1000201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142885910.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1000201321 is about 31625.9596059946. The cubic root of 1000201321 is about 1000.0671024972.

Adding to 1000201321 its reverse (1231020001), we get a palindrome (2231221322).

The spelling of 1000201321 in words is "one billion, two hundred one thousand, three hundred twenty-one".