9145315321222 has 4 divisors (see below), whose sum is σ = 13717972981836. Its totient is φ = 4572657660610.

The previous prime is 9145315321217. The next prime is 9145315321223. The reversal of 9145315321222 is 2221235135419.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9145315321223) 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 as a sum of consecutive naturals, namely, 2286328830304 + ... + 2286328830307.

It is an arithmetic number, because the mean of its divisors is an integer number (3429493245459).

Almost surely, 2^{9145315321222} is an apocalyptic number.

9145315321222 is a deficient number, since it is larger than the sum of its proper divisors (4572657660614).

9145315321222 is a wasteful number, since it uses less digits than its factorization.

9145315321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572657660613.

The product of its digits is 129600, while the sum is 40.

The spelling of 9145315321222 in words is "nine trillion, one hundred forty-five billion, three hundred fifteen million, three hundred twenty-one thousand, two hundred twenty-two".