9421423212 has 12 divisors (see below), whose sum is σ = 21983320856. Its totient is φ = 3140474400.

The previous prime is 9421423177. The next prime is 9421423229. The reversal of 9421423212 is 2123241249.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×9421423212² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9421423212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392559289 + ... + 392559312.

Almost surely, 2^9421423212 is an apocalyptic number.

It is an amenable number.

9421423212 is an abundant number, since it is smaller than the sum of its proper divisors (12561897644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9421423212 is a wasteful number, since it uses less digits than its factorization.

9421423212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785118608 (or 785118606 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 9421423212 is about 97064.0160512638. The cubic root of 9421423212 is about 2112.0563656114.

The spelling of 9421423212 in words is "nine billion, four hundred twenty-one million, four hundred twenty-three thousand, two hundred twelve".