1222345666789 has 8 divisors (see below), whose sum is σ = 1317426215000. Its totient is φ = 1127415684096.

The previous prime is 1222345666753. The next prime is 1222345666813. The reversal of 1222345666789 is 9876665432221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20461013764 + 1201884653025 = 143042^2 + 1096305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222345666789 - 2¹¹ = 1222345664741 is a prime.

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 (1222345666739) 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, 37624512 + ... + 37656985.

It is an arithmetic number, because the mean of its divisors is an integer number (164678276875).

Almost surely, 2^{1222345666789} is an apocalyptic number.

It is an amenable number.

1222345666789 is a deficient number, since it is larger than the sum of its proper divisors (95080548211).

1222345666789 is a wasteful number, since it uses less digits than its factorization.

1222345666789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75282759.

The product of its digits is 52254720, while the sum is 61.

The spelling of 1222345666789 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred sixty-six thousand, seven hundred eighty-nine".