7211808012 has 24 divisors (see below), whose sum is σ = 16850718976. Its totient is φ = 2400626448.

The previous prime is 7211807971. The next prime is 7211808013. The reversal of 7211808012 is 2108081127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7211808013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404608 + ... + 422055.

Almost surely, 2^7211808012 is an apocalyptic number.

It is an amenable number.

7211808012 is an abundant number, since it is smaller than the sum of its proper divisors (9638910964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7211808012 is a wasteful number, since it uses less digits than its factorization.

7211808012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827397 (or 827395 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 7211808012 is about 84922.3646161599. The cubic root of 7211808012 is about 1932.0337954729.

Adding to 7211808012 its reverse (2108081127), we get a palindrome (9319889139).

The spelling of 7211808012 in words is "seven billion, two hundred eleven million, eight hundred eight thousand, twelve".