913121212 has 12 divisors (see below), whose sum is σ = 1598173920. Its totient is φ = 456500096.

The previous prime is 913121207. The next prime is 913121219. The reversal of 913121212 is 212121319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49533 + ... + 65419.

It is an arithmetic number, because the mean of its divisors is an integer number (133181160).

Almost surely, 2^913121212 is an apocalyptic number.

It is an amenable number.

913121212 is a deficient number, since it is larger than the sum of its proper divisors (685052708).

913121212 is a wasteful number, since it uses less digits than its factorization.

913121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30260 (or 30258 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 913121212 is about 30217.8955587579. The cubic root of 913121212 is about 970.1587624076.

The spelling of 913121212 in words is "nine hundred thirteen million, one hundred twenty-one thousand, two hundred twelve".