3112221232221 has 16 divisors (see below), whose sum is σ = 4187965531200. Its totient is φ = 2055647973888.

The previous prime is 3112221232217. The next prime is 3112221232277. The reversal of 3112221232221 is 1222321222113.

It is not a de Polignac number, because 3112221232221 - 2² = 3112221232217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3112221232191 and 3112221232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112221232201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4968090 + ... + 5559348.

It is an arithmetic number, because the mean of its divisors is an integer number (261747845700).

Almost surely, 2^{3112221232221} is an apocalyptic number.

It is an amenable number.

3112221232221 is a deficient number, since it is larger than the sum of its proper divisors (1075744298979).

3112221232221 is a wasteful number, since it uses less digits than its factorization.

3112221232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607468.

The product of its digits is 1152, while the sum is 24.

Adding to 3112221232221 its reverse (1222321222113), we get a palindrome (4334542454334).

The spelling of 3112221232221 in words is "three trillion, one hundred twelve billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-one".