12121796 has 12 divisors (see below), whose sum is σ = 21504252. Its totient is φ = 5977728.

The previous prime is 12121793. The next prime is 12121801. The reversal of 12121796 is 69712121.

It can be written as a sum of positive squares in 2 ways, for example, as 8065600 + 4056196 = 2840^2 + 2014^2 .

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 3 ways as a sum of consecutive naturals, for example, 20465 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (1792021).

Almost surely, 2^12121796 is an apocalyptic number.

It is an amenable number.

12121796 is a deficient number, since it is larger than the sum of its proper divisors (9382456).

12121796 is a wasteful number, since it uses less digits than its factorization.

12121796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41590 (or 41588 counting only the distinct ones).

The product of its digits is 1512, while the sum is 29.

The square root of 12121796 is about 3481.6369713111. The cubic root of 12121796 is about 229.7148071965.

The spelling of 12121796 in words is "twelve million, one hundred twenty-one thousand, seven hundred ninety-six".