4312021212 has 36 divisors (see below), whose sum is σ = 10903772880. Its totient is φ = 1436820672.

The previous prime is 4312021201. The next prime is 4312021237. The reversal of 4312021212 is 2121202134.

It is a happy number.

4312021212 is a `hidden beast` number, since 431 + 2 + 0 + 21 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86713 + ... + 127055.

It is an arithmetic number, because the mean of its divisors is an integer number (302882580).

Almost surely, 2^4312021212 is an apocalyptic number.

It is an amenable number.

4312021212 is an abundant number, since it is smaller than the sum of its proper divisors (6591751668).

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

4312021212 is a wasteful number, since it uses less digits than its factorization.

4312021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43322 (or 43317 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4312021212 is about 65665.9821521006. The cubic root of 4312021212 is about 1627.6472778298.

Adding to 4312021212 its reverse (2121202134), we get a palindrome (6433223346).

The spelling of 4312021212 in words is "four billion, three hundred twelve million, twenty-one thousand, two hundred twelve".