3921210212 has 12 divisors (see below), whose sum is σ = 7083476736. Its totient is φ = 1897359720.

The previous prime is 3921210197. The next prime is 3921210221. The reversal of 3921210212 is 2120121293.

It is a happy number.

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, 15811208 + ... + 15811455.

It is an arithmetic number, because the mean of its divisors is an integer number (590289728).

Almost surely, 2^3921210212 is an apocalyptic number.

It is an amenable number.

3921210212 is a deficient number, since it is larger than the sum of its proper divisors (3162266524).

3921210212 is a wasteful number, since it uses less digits than its factorization.

3921210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31622698 (or 31622696 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 3921210212 is about 62619.5673252379. The cubic root of 3921210212 is about 1576.9092776757.

The spelling of 3921210212 in words is "three billion, nine hundred twenty-one million, two hundred ten thousand, two hundred twelve".