4312225021 has 8 divisors (see below), whose sum is σ = 4644458840. Its totient is φ = 3980066112.

The previous prime is 4312225013. The next prime is 4312225031. The reversal of 4312225021 is 1205222134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 214944921 + 4097280100 = 14661^2 + 64010^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4312225021 - 2³ = 4312225013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4312224983 and 4312225001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312225031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175531 + ... + 198583.

It is an arithmetic number, because the mean of its divisors is an integer number (580557355).

Almost surely, 2^4312225021 is an apocalyptic number.

It is an amenable number.

4312225021 is a deficient number, since it is larger than the sum of its proper divisors (332233819).

4312225021 is a wasteful number, since it uses less digits than its factorization.

4312225021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37455.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4312225021 is about 65667.5339951182. The cubic root of 4312225021 is about 1627.6729211744.

Adding to 4312225021 its reverse (1205222134), we get a palindrome (5517447155).

The spelling of 4312225021 in words is "four billion, three hundred twelve million, two hundred twenty-five thousand, twenty-one".