1222344566789 has 16 divisors (see below), whose sum is σ = 1242439750656. Its totient is φ = 1202332118400.

The previous prime is 1222344566761. The next prime is 1222344566813. The reversal of 1222344566789 is 9876654432221.

It is a cyclic number.

It is not a de Polignac number, because 1222344566789 - 2¹⁶ = 1222344501253 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 (1222344556789) 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, 69851489 + ... + 69868985.

It is an arithmetic number, because the mean of its divisors is an integer number (77652484416).

Almost surely, 2^{1222344566789} is an apocalyptic number.

It is an amenable number.

1222344566789 is a deficient number, since it is larger than the sum of its proper divisors (20095183867).

1222344566789 is a wasteful number, since it uses less digits than its factorization.

1222344566789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19796.

The product of its digits is 34836480, while the sum is 59.

The spelling of 1222344566789 in words is "one trillion, two hundred twenty-two billion, three hundred forty-four million, five hundred sixty-six thousand, seven hundred eighty-nine".