122234456789 has 4 divisors (see below), whose sum is σ = 122235548556. Its totient is φ = 122233365024.

The previous prime is 122234456753. The next prime is 122234456791. The reversal of 122234456789 is 987654432221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 987654432221 = 37 ⋅26693363033.

It can be written as a sum of positive squares in 2 ways, for example, as 12502594225 + 109731862564 = 111815^2 + 331258^2 .

It is a cyclic number.

It is not a de Polignac number, because 122234456789 - 2³⁶ = 53514980053 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 122234456789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122236456789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355904 + ... + 609209.

It is an arithmetic number, because the mean of its divisors is an integer number (30558887139).

Almost surely, 2^122234456789 is an apocalyptic number.

It is an amenable number.

122234456789 is a deficient number, since it is larger than the sum of its proper divisors (1091767).

122234456789 is an equidigital number, since it uses as much as digits as its factorization.

122234456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091766.

The product of its digits is 5806080, while the sum is 53.

The spelling of 122234456789 in words is "one hundred twenty-two billion, two hundred thirty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".