1222345566789 has 16 divisors (see below), whose sum is σ = 1663074504000. Its totient is φ = 798351117056.

The previous prime is 1222345566773. The next prime is 1222345566797. The reversal of 1222345566789 is 9876655432221.

It is a cyclic number.

It is not a de Polignac number, because 1222345566789 - 2⁴ = 1222345566773 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222345566989) 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 in 15 ways as a sum of consecutive naturals, for example, 11732964 + ... + 11836685.

It is an arithmetic number, because the mean of its divisors is an integer number (103942156500).

Almost surely, 2^{1222345566789} is an apocalyptic number.

It is an amenable number.

1222345566789 is a deficient number, since it is larger than the sum of its proper divisors (440728937211).

1222345566789 is a wasteful number, since it uses less digits than its factorization.

1222345566789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23570004.

The product of its digits is 43545600, while the sum is 60.

The spelling of 1222345566789 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, five hundred sixty-six thousand, seven hundred eighty-nine".