3501050021 has 16 divisors (see below), whose sum is σ = 4043735040. Its totient is φ = 2969129520.

The previous prime is 3501050011. The next prime is 3501050053. The reversal of 3501050021 is 1200501053.

It is not a de Polignac number, because 3501050021 - 2¹⁴ = 3501033637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3501050011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331736 + ... + 342126.

It is an arithmetic number, because the mean of its divisors is an integer number (252733440).

Almost surely, 2^3501050021 is an apocalyptic number.

It is an amenable number.

3501050021 is a deficient number, since it is larger than the sum of its proper divisors (542685019).

3501050021 is a wasteful number, since it uses less digits than its factorization.

3501050021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 3501050021 is about 59169.6714626674. The cubic root of 3501050021 is about 1518.4463032420.

Adding to 3501050021 its reverse (1200501053), we get a palindrome (4701551074).

The spelling of 3501050021 in words is "three billion, five hundred one million, fifty thousand, twenty-one".