3501221221001 has 8 divisors (see below), whose sum is σ = 4001413806720. Its totient is φ = 3001033166688.

The previous prime is 3501221220911. The next prime is 3501221221013. The reversal of 3501221221001 is 1001221221053.

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 3501221221001 - 2¹⁸ = 3501220958857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3501221221031) 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, 726245 + ... + 2744061.

It is an arithmetic number, because the mean of its divisors is an integer number (500176725840).

Almost surely, 2^{3501221221001} is an apocalyptic number.

It is an amenable number.

3501221221001 is a deficient number, since it is larger than the sum of its proper divisors (500192585719).

3501221221001 is a wasteful number, since it uses less digits than its factorization.

3501221221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265703.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 3501221221001 its reverse (1001221221053), we get a palindrome (4502442442054).

The spelling of 3501221221001 in words is "three trillion, five hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, one".