3201221222231 has 4 divisors (see below), whose sum is σ = 3205483834464. Its totient is φ = 3196958610000.

The previous prime is 3201221222183. The next prime is 3201221222239. The reversal of 3201221222231 is 1322221221023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3201221222231 - 2³⁴ = 3184041353047 is a prime.

It is a super-2 number, since 2×3201221222231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201221222197 and 3201221222206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201221222239) 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, 2131304990 + ... + 2131306491.

It is an arithmetic number, because the mean of its divisors is an integer number (801370958616).

Almost surely, 2^{3201221222231} is an apocalyptic number.

3201221222231 is a deficient number, since it is larger than the sum of its proper divisors (4262612233).

3201221222231 is an equidigital number, since it uses as much as digits as its factorization.

3201221222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262612232.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 3201221222231 its reverse (1322221221023), we get a palindrome (4523442443254).

The spelling of 3201221222231 in words is "three trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred thirty-one".