7311221132 has 6 divisors (see below), whose sum is σ = 12794636988. Its totient is φ = 3655610564.

The previous prime is 7311221123. The next prime is 7311221149. The reversal of 7311221132 is 2311221137.

It is a super-2 number, since 2×7311221132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7311221098 and 7311221107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913902638 + ... + 913902645.

It is an arithmetic number, because the mean of its divisors is an integer number (2132439498).

Almost surely, 2^7311221132 is an apocalyptic number.

It is an amenable number.

7311221132 is a deficient number, since it is larger than the sum of its proper divisors (5483415856).

7311221132 is a wasteful number, since it uses less digits than its factorization.

7311221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827805287 (or 1827805285 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 7311221132 is about 85505.6789459039. The cubic root of 7311221132 is about 1940.8708610070.

Adding to 7311221132 its reverse (2311221137), we get a palindrome (9622442269).

The spelling of 7311221132 in words is "seven billion, three hundred eleven million, two hundred twenty-one thousand, one hundred thirty-two".