7722121211212 has 12 divisors (see below), whose sum is σ = 13539650150376. Its totient is φ = 3853649739680.

The previous prime is 7722121211177. The next prime is 7722121211219. The reversal of 7722121211212 is 2121121212277.

It is not an unprimeable number, because it can be changed into a prime (7722121211219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852714138 + ... + 1852718305.

It is an arithmetic number, because the mean of its divisors is an integer number (1128304179198).

Almost surely, 2^{7722121211212} is an apocalyptic number.

It is an amenable number.

7722121211212 is a deficient number, since it is larger than the sum of its proper divisors (5817528939164).

7722121211212 is a wasteful number, since it uses less digits than its factorization.

7722121211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705432968 (or 3705432966 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

Adding to 7722121211212 its reverse (2121121212277), we get a palindrome (9843242423489).

The spelling of 7722121211212 in words is "seven trillion, seven hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".