1001421001 has 4 divisors (see below), whose sum is σ = 1144481152. Its totient is φ = 858360852.

The previous prime is 1001420939. The next prime is 1001421007. The reversal of 1001421001 is 1001241001.

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 1001421001 - 2¹¹ = 1001418953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001421007) 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, 71530065 + ... + 71530078.

It is an arithmetic number, because the mean of its divisors is an integer number (286120288).

Almost surely, 2^1001421001 is an apocalyptic number.

It is an amenable number.

1001421001 is a deficient number, since it is larger than the sum of its proper divisors (143060151).

1001421001 is an equidigital number, since it uses as much as digits as its factorization.

1001421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143060150.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1001421001 is about 31645.2366241746. The cubic root of 1001421001 is about 1000.4734428165.

Adding to 1001421001 its reverse (1001241001), we get a palindrome (2002662002).

The spelling of 1001421001 in words is "one billion, one million, four hundred twenty-one thousand, one".