12122665645456 has 40 divisors (see below), whose sum is σ = 23873138866808. Its totient is φ = 5961859200000.

The previous prime is 12122665645427. The next prime is 12122665645459. The reversal of 12122665645456 is 65454656622121.

It can be written as a sum of positive squares in 4 ways, for example, as 1890856007056 + 10231809638400 = 1375084^2 + 3198720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12122665645397 and 12122665645406.

It is not an unprimeable number, because it can be changed into a prime (12122665645459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98495956 + ... + 98618956.

Almost surely, 2^{12122665645456} is an apocalyptic number.

12122665645456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12122665645456 is a deficient number, since it is larger than the sum of its proper divisors (11750473221352).

12122665645456 is a wasteful number, since it uses less digits than its factorization.

12122665645456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224051 (or 224045 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 55.

The spelling of 12122665645456 in words is "twelve trillion, one hundred twenty-two billion, six hundred sixty-five million, six hundred forty-five thousand, four hundred fifty-six".