121316212 has 24 divisors (see below), whose sum is σ = 222122880. Its totient is φ = 57915840.

The previous prime is 121316207. The next prime is 121316231. The reversal of 121316212 is 212613121.

It is a self number, because there is not a number n which added to its sum of digits gives 121316212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162 + ... + 15577.

It is an arithmetic number, because the mean of its divisors is an integer number (9255120).

Almost surely, 2^121316212 is an apocalyptic number.

It is an amenable number.

121316212 is a deficient number, since it is larger than the sum of its proper divisors (100806668).

121316212 is a wasteful number, since it uses less digits than its factorization.

121316212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15831 (or 15829 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 121316212 is about 11014.3638944789. The cubic root of 121316212 is about 495.0392269019.

Adding to 121316212 its reverse (212613121), we get a palindrome (333929333).

The spelling of 121316212 in words is "one hundred twenty-one million, three hundred sixteen thousand, two hundred twelve".