4123021213 has 8 divisors (see below), whose sum is σ = 4226294520. Its totient is φ = 4019877120.

The previous prime is 4123021207. The next prime is 4123021219. The reversal of 4123021213 is 3121203214.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4123021207) and next prime (4123021219).

It can be written as a sum of positive squares in 4 ways, for example, as 996004 + 4122025209 = 998^2 + 64203^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4123021213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123021219) 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, 33993 + ... + 96961.

It is an arithmetic number, because the mean of its divisors is an integer number (528286815).

Almost surely, 2^4123021213 is an apocalyptic number.

It is an amenable number.

4123021213 is a deficient number, since it is larger than the sum of its proper divisors (103273307).

4123021213 is a wasteful number, since it uses less digits than its factorization.

4123021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64607.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4123021213 is about 64210.7562095324. The cubic root of 4123021213 is about 1603.5106784360.

Adding to 4123021213 its reverse (3121203214), we get a palindrome (7244224427).

The spelling of 4123021213 in words is "four billion, one hundred twenty-three million, twenty-one thousand, two hundred thirteen".