121203212 has 24 divisors (see below), whose sum is σ = 230232576. Its totient is φ = 55496448.

The previous prime is 121203193. The next prime is 121203347. The reversal of 121203212 is 212302121.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2573 + ... + 15780.

It is an arithmetic number, because the mean of its divisors is an integer number (9593024).

Almost surely, 2^121203212 is an apocalyptic number.

It is an amenable number.

121203212 is a deficient number, since it is larger than the sum of its proper divisors (109029364).

121203212 is a wasteful number, since it uses less digits than its factorization.

121203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18497 (or 18495 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121203212 is about 11009.2330341400. The cubic root of 121203212 is about 494.8854777066.

Adding to 121203212 its reverse (212302121), we get a palindrome (333505333).

The spelling of 121203212 in words is "one hundred twenty-one million, two hundred three thousand, two hundred twelve".