9581222111222 has 4 divisors (see below), whose sum is σ = 14371833166836. Its totient is φ = 4790611055610.

The previous prime is 9581222111137. The next prime is 9581222111243. The reversal of 9581222111222 is 2221112221859.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2395305527804 + ... + 2395305527807.

It is an arithmetic number, because the mean of its divisors is an integer number (3592958291709).

Almost surely, 2^{9581222111222} is an apocalyptic number.

9581222111222 is a deficient number, since it is larger than the sum of its proper divisors (4790611055614).

9581222111222 is a wasteful number, since it uses less digits than its factorization.

9581222111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790611055613.

The product of its digits is 23040, while the sum is 38.

The spelling of 9581222111222 in words is "nine trillion, five hundred eighty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".