1222345667789 has 4 divisors (see below), whose sum is σ = 1222350951900. Its totient is φ = 1222340383680.

The previous prime is 1222345667597. The next prime is 1222345667801. The reversal of 1222345667789 is 9877665432221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191968412164 + 1030377255625 = 438142^2 + 1015075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222345667789 - 2²⁸ = 1222077232333 is a prime.

It is a Duffinian number.

It is a Curzon 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 (1222345669789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278382 + ... + 2763279.

It is an arithmetic number, because the mean of its divisors is an integer number (305587737975).

Almost surely, 2^{1222345667789} is an apocalyptic number.

It is an amenable number.

1222345667789 is a deficient number, since it is larger than the sum of its proper divisors (5284111).

1222345667789 is an equidigital number, since it uses as much as digits as its factorization.

1222345667789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284110.

The product of its digits is 60963840, while the sum is 62.

The spelling of 1222345667789 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred sixty-seven thousand, seven hundred eighty-nine".