3223665021 has 8 divisors (see below), whose sum is σ = 4303420704. Its totient is φ = 2146509680.

The previous prime is 3223665019. The next prime is 3223665059. The reversal of 3223665021 is 1205663223.

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 3223665021 - 2¹ = 3223665019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3223665021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3223665091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647190 + ... + 652151.

It is an arithmetic number, because the mean of its divisors is an integer number (537927588).

Almost surely, 2^3223665021 is an apocalyptic number.

It is an amenable number.

3223665021 is a deficient number, since it is larger than the sum of its proper divisors (1079755683).

3223665021 is a wasteful number, since it uses less digits than its factorization.

3223665021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300171.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 3223665021 is about 56777.3284066801. The cubic root of 3223665021 is about 1477.2362930746.

The spelling of 3223665021 in words is "three billion, two hundred twenty-three million, six hundred sixty-five thousand, twenty-one".