2331122216 has 8 divisors (see below), whose sum is σ = 4370854170. Its totient is φ = 1165561104.

The previous prime is 2331122207. The next prime is 2331122239. The reversal of 2331122216 is 6122211332.

It can be written as a sum of positive squares in only one way, i.e., 1751757316 + 579364900 = 41854^2 + 24070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2331122191 and 2331122200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145695131 + ... + 145695146.

Almost surely, 2^2331122216 is an apocalyptic number.

It is an amenable number.

2331122216 is a deficient number, since it is larger than the sum of its proper divisors (2039731954).

2331122216 is a wasteful number, since it uses less digits than its factorization.

2331122216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291390283 (or 291390279 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 2331122216 is about 48281.6964904921. The cubic root of 2331122216 is about 1325.9333101113.

Adding to 2331122216 its reverse (6122211332), we get a palindrome (8453333548).

The spelling of 2331122216 in words is "two billion, three hundred thirty-one million, one hundred twenty-two thousand, two hundred sixteen".