7115521222 has 8 divisors (see below), whose sum is σ = 10673726616. Its totient is φ = 3557612352.

The previous prime is 7115521211. The next prime is 7115521267. The reversal of 7115521222 is 2221255117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153 + ... + 119299.

It is an arithmetic number, because the mean of its divisors is an integer number (1334215827).

Almost surely, 2^7115521222 is an apocalyptic number.

7115521222 is a deficient number, since it is larger than the sum of its proper divisors (3558205394).

7115521222 is a wasteful number, since it uses less digits than its factorization.

7115521222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148262.

The product of its digits is 2800, while the sum is 28.

The square root of 7115521222 is about 84353.5489591280. The cubic root of 7115521222 is about 1923.3968749593.

Adding to 7115521222 its reverse (2221255117), we get a palindrome (9336776339).

The spelling of 7115521222 in words is "seven billion, one hundred fifteen million, five hundred twenty-one thousand, two hundred twenty-two".