7823221012 has 24 divisors (see below), whose sum is σ = 14322672000. Its totient is φ = 3731905056.

The previous prime is 7823220971. The next prime is 7823221019. The reversal of 7823221012 is 2101223287.

It is a super-2 number, since 2×7823221012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7823221019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73512 + ... + 145087.

It is an arithmetic number, because the mean of its divisors is an integer number (596778000).

Almost surely, 2^7823221012 is an apocalyptic number.

It is an amenable number.

7823221012 is a deficient number, since it is larger than the sum of its proper divisors (6499450988).

7823221012 is a wasteful number, since it uses less digits than its factorization.

7823221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219015 (or 219013 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 7823221012 is about 88448.9740584932. The cubic root of 7823221012 is about 1985.1585558598.

Adding to 7823221012 its reverse (2101223287), we get a palindrome (9924444299).

The spelling of 7823221012 in words is "seven billion, eight hundred twenty-three million, two hundred twenty-one thousand, twelve".