121118212 has 6 divisors (see below), whose sum is σ = 211956878. Its totient is φ = 60559104.

The previous prime is 121118203. The next prime is 121118219. The reversal of 121118212 is 212811121.

It can be written as a sum of positive squares in only one way, i.e., 109118916 + 11999296 = 10446^2 + 3464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121118212.

It is not an unprimeable number, because it can be changed into a prime (121118219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15139773 + ... + 15139780.

Almost surely, 2^121118212 is an apocalyptic number.

It is an amenable number.

121118212 is a deficient number, since it is larger than the sum of its proper divisors (90838666).

121118212 is a wasteful number, since it uses less digits than its factorization.

121118212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30279557 (or 30279555 counting only the distinct ones).

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

The square root of 121118212 is about 11005.3719610016. The cubic root of 121118212 is about 494.7697626684.

Adding to 121118212 its reverse (212811121), we get a palindrome (333929333).

The spelling of 121118212 in words is "one hundred twenty-one million, one hundred eighteen thousand, two hundred twelve".