3312023221021 has 4 divisors (see below), whose sum is σ = 3312026861500. Its totient is φ = 3312019580544.

The previous prime is 3312023221009. The next prime is 3312023221043. The reversal of 3312023221021 is 1201223202133.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1917155928996 + 1394867292025 = 1384614^2 + 1181045^2 .

It is a cyclic number.

It is not a de Polignac number, because 3312023221021 - 2¹⁹ = 3312022696733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3312023220983 and 3312023221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3312023221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857155 + ... + 2712703.

It is an arithmetic number, because the mean of its divisors is an integer number (828006715375).

Almost surely, 2^{3312023221021} is an apocalyptic number.

It is an amenable number.

3312023221021 is a deficient number, since it is larger than the sum of its proper divisors (3640479).

3312023221021 is a wasteful number, since it uses less digits than its factorization.

3312023221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640478.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 3312023221021 its reverse (1201223202133), we get a palindrome (4513246423154).

The spelling of 3312023221021 in words is "three trillion, three hundred twelve billion, twenty-three million, two hundred twenty-one thousand, twenty-one".