1001432221 has 8 divisors (see below), whose sum is σ = 1054516320. Its totient is φ = 948385872.

The previous prime is 1001432219. The next prime is 1001432231. The reversal of 1001432221 is 1222341001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001432221 - 2¹ = 1001432219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001432195 and 1001432204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001432231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57126 + ... + 72568.

It is an arithmetic number, because the mean of its divisors is an integer number (131814540).

Almost surely, 2^1001432221 is an apocalyptic number.

It is an amenable number.

1001432221 is a deficient number, since it is larger than the sum of its proper divisors (53084099).

1001432221 is a wasteful number, since it uses less digits than its factorization.

1001432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18875.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1001432221 is about 31645.4139015435. The cubic root of 1001432221 is about 1000.4771792637.

Adding to 1001432221 its reverse (1222341001), we get a palindrome (2223773222).

The spelling of 1001432221 in words is "one billion, one million, four hundred thirty-two thousand, two hundred twenty-one".