1122222457789 has 4 divisors (see below), whose sum is σ = 1152552794524. Its totient is φ = 1091892121056.

The previous prime is 1122222457753. The next prime is 1122222457817. The reversal of 1122222457789 is 9877542222211.

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 1066917528889 + 55304928900 = 1032917^2 + 235170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122222457789 - 2¹⁷ = 1122222326717 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 (1122222457709) 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, 15165168312 + ... + 15165168385.

It is an arithmetic number, because the mean of its divisors is an integer number (288138198631).

Almost surely, 2^{1122222457789} is an apocalyptic number.

It is an amenable number.

1122222457789 is a deficient number, since it is larger than the sum of its proper divisors (30330336735).

1122222457789 is an equidigital number, since it uses as much as digits as its factorization.

1122222457789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30330336734.

The product of its digits is 2257920, while the sum is 52.

The spelling of 1122222457789 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, four hundred fifty-seven thousand, seven hundred eighty-nine".