12121794 has 24 divisors (see below), whose sum is σ = 26378352. Its totient is φ = 4023000.

The previous prime is 12121793. The next prime is 12121801. The reversal of 12121794 is 49712121.

It is not an unprimeable number, because it can be changed into a prime (12121793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3177 + ... + 5859.

It is an arithmetic number, because the mean of its divisors is an integer number (1099098).

Almost surely, 2^12121794 is an apocalyptic number.

12121794 is an abundant number, since it is smaller than the sum of its proper divisors (14256558).

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

12121794 is a wasteful number, since it uses less digits than its factorization.

12121794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2939 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 12121794 is about 3481.6366840898. The cubic root of 12121794 is about 229.7147945628.

The spelling of 12121794 in words is "twelve million, one hundred twenty-one thousand, seven hundred ninety-four".