123422135512 has 16 divisors (see below), whose sum is σ = 249217773840. Its totient is φ = 56964062496.

The previous prime is 123422135491. The next prime is 123422135531. The reversal of 123422135512 is 215531224321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593375548 + ... + 593375755.

It is an arithmetic number, because the mean of its divisors is an integer number (15576110865).

Almost surely, 2^123422135512 is an apocalyptic number.

It is an amenable number.

123422135512 is an abundant number, since it is smaller than the sum of its proper divisors (125795638328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123422135512 is a wasteful number, since it uses less digits than its factorization.

123422135512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186751322 (or 1186751318 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

Adding to 123422135512 its reverse (215531224321), we get a palindrome (338953359833).

The spelling of 123422135512 in words is "one hundred twenty-three billion, four hundred twenty-two million, one hundred thirty-five thousand, five hundred twelve".