1222444455689 has 16 divisors (see below), whose sum is σ = 1321637575680. Its totient is φ = 1127368735680.

The previous prime is 1222444455607. The next prime is 1222444455703. The reversal of 1222444455689 is 9865544442221.

It is a cyclic number.

It is not a de Polignac number, because 1222444455689 - 2¹² = 1222444451593 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1222444445689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2995022 + ... + 3378615.

It is an arithmetic number, because the mean of its divisors is an integer number (82602348480).

Almost surely, 2^{1222444455689} is an apocalyptic number.

It is an amenable number.

1222444455689 is a deficient number, since it is larger than the sum of its proper divisors (99193119991).

1222444455689 is a wasteful number, since it uses less digits than its factorization.

1222444455689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373960.

The product of its digits is 22118400, while the sum is 56.

The spelling of 1222444455689 in words is "one trillion, two hundred twenty-two billion, four hundred forty-four million, four hundred fifty-five thousand, six hundred eighty-nine".