12121120121122 has 16 divisors (see below), whose sum is σ = 18208234720440. Its totient is φ = 6051711162112.

The previous prime is 12121120121051. The next prime is 12121120121129. The reversal of 12121120121122 is 22112102112121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10399857464161 + 1721262656961 = 3224881^2 + 1311969^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12121120121122.

It is not an unprimeable number, because it can be changed into a prime (12121120121129) 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, 8670618 + ... + 9971050.

Almost surely, 2^{12121120121122} is an apocalyptic number.

12121120121122 is a deficient number, since it is larger than the sum of its proper divisors (6087114599318).

12121120121122 is a wasteful number, since it uses less digits than its factorization.

12121120121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307237.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12121120121122 its reverse (22112102112121), we get a palindrome (34233222233243).

The spelling of 12121120121122 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".