3301220021 has 32 divisors (see below), whose sum is σ = 3894500736. Its totient is φ = 2764800000.

The previous prime is 3301220009. The next prime is 3301220029. The reversal of 3301220021 is 1200221033.

It is a happy number.

3301220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3301220021 - 2¹⁰ = 3301218997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3301219978 and 3301220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301220029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2862581 + ... + 2863733.

It is an arithmetic number, because the mean of its divisors is an integer number (121703148).

Almost surely, 2^3301220021 is an apocalyptic number.

It is an amenable number.

3301220021 is a deficient number, since it is larger than the sum of its proper divisors (593280715).

3301220021 is a wasteful number, since it uses less digits than its factorization.

3301220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3301220021 is about 57456.2444038940. The cubic root of 3301220021 is about 1488.9890024736.

Adding to 3301220021 its reverse (1200221033), we get a palindrome (4501441054).

It can be divided in two parts, 3301 and 220021, that added together give a palindrome (223322).

The spelling of 3301220021 in words is "three billion, three hundred one million, two hundred twenty thousand, twenty-one".