3201221001231 has 72 divisors (see below), whose sum is σ = 5148851288672. Its totient is φ = 1914994224000.

The previous prime is 3201221001217. The next prime is 3201221001289. The reversal of 3201221001231 is 1321001221023.

3201221001231 is a `hidden beast` number, since 320 + 1 + 221 + 0 + 0 + 123 + 1 = 666.

It is not a de Polignac number, because 3201221001231 - 2⁷ = 3201221001103 is a prime.

It is a super-2 number, since 2×3201221001231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201221001431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25754925 + ... + 25878921.

Almost surely, 2^{3201221001231} is an apocalyptic number.

3201221001231 is a deficient number, since it is larger than the sum of its proper divisors (1947630287441).

3201221001231 is a wasteful number, since it uses less digits than its factorization.

3201221001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124333 (or 124319 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 3201221001231 its reverse (1321001221023), we get a palindrome (4522222222254).

The spelling of 3201221001231 in words is "three trillion, two hundred one billion, two hundred twenty-one million, one thousand, two hundred thirty-one".