3205221005 has 16 divisors (see below), whose sum is σ = 4586851584. Its totient is φ = 2102305920.

The previous prime is 3205220981. The next prime is 3205221083. The reversal of 3205221005 is 5001225023.

It is not a de Polignac number, because 3205221005 - 2¹⁰ = 3205219981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1990016 + ... + 1991625.

It is an arithmetic number, because the mean of its divisors is an integer number (286678224).

Almost surely, 2^3205221005 is an apocalyptic number.

3205221005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3205221005 is a deficient number, since it is larger than the sum of its proper divisors (1381630579).

3205221005 is a wasteful number, since it uses less digits than its factorization.

3205221005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981676.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 3205221005 is about 56614.6712875735. The cubic root of 3205221005 is about 1474.4135951085.

Adding to 3205221005 its reverse (5001225023), we get a palindrome (8206446028).

The spelling of 3205221005 in words is "three billion, two hundred five million, two hundred twenty-one thousand, five".