12121162822447 has 32 divisors (see below), whose sum is σ = 15142670807040. Its totient is φ = 9461799267840.

The previous prime is 12121162822441. The next prime is 12121162822501. The reversal of 12121162822447 is 74422826112121.

It is not a de Polignac number, because 12121162822447 - 2¹¹ = 12121162820399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121162822441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29852629 + ... + 30255937.

It is an arithmetic number, because the mean of its divisors is an integer number (473208462720).

Almost surely, 2^{12121162822447} is an apocalyptic number.

12121162822447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12121162822447 is a deficient number, since it is larger than the sum of its proper divisors (3021507984593).

12121162822447 is a wasteful number, since it uses less digits than its factorization.

12121162822447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411511.

The product of its digits is 172032, while the sum is 43.

Adding to 12121162822447 its reverse (74422826112121), we get a palindrome (86543988934568).

The spelling of 12121162822447 in words is "twelve trillion, one hundred twenty-one billion, one hundred sixty-two million, eight hundred twenty-two thousand, four hundred forty-seven".