121923179412 has 24 divisors (see below), whose sum is σ = 284493148800. Its totient is φ = 40640241216.

The previous prime is 121923179407. The next prime is 121923179431. The reversal of 121923179412 is 214971329121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956664 + ... + 1076592.

It is an arithmetic number, because the mean of its divisors is an integer number (11853881200).

Almost surely, 2^121923179412 is an apocalyptic number.

121923179412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121923179412 is an abundant number, since it is smaller than the sum of its proper divisors (162569969388).

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

121923179412 is a wasteful number, since it uses less digits than its factorization.

121923179412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204655 (or 204653 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The spelling of 121923179412 in words is "one hundred twenty-one billion, nine hundred twenty-three million, one hundred seventy-nine thousand, four hundred twelve".