121313212 has 6 divisors (see below), whose sum is σ = 212298128. Its totient is φ = 60656604.

The previous prime is 121313197. The next prime is 121313243. The reversal of 121313212 is 212313121.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15164148 + ... + 15164155.

Almost surely, 2^121313212 is an apocalyptic number.

It is an amenable number.

121313212 is a deficient number, since it is larger than the sum of its proper divisors (90984916).

121313212 is a wasteful number, since it uses less digits than its factorization.

121313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30328307 (or 30328305 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 121313212 is about 11014.2277078332. The cubic root of 121313212 is about 495.0351462988.

Adding to 121313212 its reverse (212313121), we get a palindrome (333626333).

Subtracting 121313212 from its reverse (212313121), we obtain a palindrome (90999909).

The spelling of 121313212 in words is "one hundred twenty-one million, three hundred thirteen thousand, two hundred twelve".