3301212021 has 4 divisors (see below), whose sum is σ = 4401616032. Its totient is φ = 2200808012.

The previous prime is 3301212001. The next prime is 3301212023. The reversal of 3301212021 is 1202121033.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1202121033 = 3 ⋅400707011.

It is a cyclic number.

It is not a de Polignac number, because 3301212021 - 2¹⁷ = 3301080949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301212023) 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, 550202001 + ... + 550202006.

It is an arithmetic number, because the mean of its divisors is an integer number (1100404008).

Almost surely, 2^3301212021 is an apocalyptic number.

It is an amenable number.

3301212021 is a deficient number, since it is larger than the sum of its proper divisors (1100404011).

3301212021 is a wasteful number, since it uses less digits than its factorization.

3301212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100404010.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3301212021 is about 57456.1747856573. The cubic root of 3301212021 is about 1488.9877996939.

Adding to 3301212021 its reverse (1202121033), we get a palindrome (4503333054).

The spelling of 3301212021 in words is "three billion, three hundred one million, two hundred twelve thousand, twenty-one".