3211222220231 has 4 divisors (see below), whose sum is σ = 3285901806792. Its totient is φ = 3136542633672.

The previous prime is 3211222220221. The next prime is 3211222220243. The reversal of 3211222220231 is 1320222221123.

It is a happy number.

3211222220231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3211222220231 - 2¹⁰ = 3211222219207 is a prime.

It is a super-2 number, since 2×3211222220231² (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 = 3211222220197 and 3211222220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211222220221) 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, 37339793216 + ... + 37339793301.

It is an arithmetic number, because the mean of its divisors is an integer number (821475451698).

Almost surely, 2^{3211222220231} is an apocalyptic number.

3211222220231 is a deficient number, since it is larger than the sum of its proper divisors (74679586561).

3211222220231 is an equidigital number, since it uses as much as digits as its factorization.

3211222220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74679586560.

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

Adding to 3211222220231 its reverse (1320222221123), we get a palindrome (4531444441354).

The spelling of 3211222220231 in words is "three trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred thirty-one".