920921212 has 24 divisors (see below), whose sum is σ = 1716298416. Its totient is φ = 430864128.

The previous prime is 920921189. The next prime is 920921227. The reversal of 920921212 is 212129029.

920921212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 27378 + ... + 50905.

It is an arithmetic number, because the mean of its divisors is an integer number (71512434).

Almost surely, 2^920921212 is an apocalyptic number.

It is an amenable number.

920921212 is a deficient number, since it is larger than the sum of its proper divisors (795377204).

920921212 is a wasteful number, since it uses less digits than its factorization.

920921212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78477 (or 78475 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 920921212 is about 30346.6837067908. The cubic root of 920921212 is about 972.9133412975.

The spelling of 920921212 in words is "nine hundred twenty million, nine hundred twenty-one thousand, two hundred twelve".