123213321194 has 16 divisors (see below), whose sum is σ = 189953925000. Its totient is φ = 59941566432.

The previous prime is 123213321193. The next prime is 123213321223. The reversal of 123213321194 is 491123312321.

It can be written as a sum of positive squares in 4 ways, for example, as 123036085225 + 177235969 = 350765^2 + 13313^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123213321194.

It is not an unprimeable number, because it can be changed into a prime (123213321193) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 506819 + ... + 709430.

Almost surely, 2^123213321194 is an apocalyptic number.

123213321194 is a deficient number, since it is larger than the sum of its proper divisors (66740603806).

123213321194 is an frugal number, since it uses more digits than its factorization.

123213321194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216362 (or 1216288 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The spelling of 123213321194 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred ninety-four".