4353304120021 has 4 divisors (see below), whose sum is σ = 4353357668044. Its totient is φ = 4353250572000.

The previous prime is 4353304120003. The next prime is 4353304120027. The reversal of 4353304120021 is 1200214033534.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2304670116996 + 2048634003025 = 1518114^2 + 1431305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4353304120021 - 2²³ = 4353295731413 is a prime.

It is a super-2 number, since 2×4353304120021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4353304120027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26651880 + ... + 26814721.

It is an arithmetic number, because the mean of its divisors is an integer number (1088339417011).

Almost surely, 2^{4353304120021} is an apocalyptic number.

It is an amenable number.

4353304120021 is a deficient number, since it is larger than the sum of its proper divisors (53548023).

4353304120021 is an equidigital number, since it uses as much as digits as its factorization.

4353304120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53548022.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 4353304120021 its reverse (1200214033534), we get a palindrome (5553518153555).

The spelling of 4353304120021 in words is "four trillion, three hundred fifty-three billion, three hundred four million, one hundred twenty thousand, twenty-one".