53304121021 has 4 divisors (see below), whose sum is σ = 53315260992. Its totient is φ = 53292981052.

The previous prime is 53304121001. The next prime is 53304121043. The reversal of 53304121021 is 12012140335.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53304121021 - 2¹⁹ = 53303596733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53304120983 and 53304121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53304121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5562805 + ... + 5572378.

It is an arithmetic number, because the mean of its divisors is an integer number (13328815248).

Almost surely, 2^53304121021 is an apocalyptic number.

It is an amenable number.

53304121021 is a deficient number, since it is larger than the sum of its proper divisors (11139971).

53304121021 is a wasteful number, since it uses less digits than its factorization.

53304121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139970.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 53304121021 its reverse (12012140335), we get a palindrome (65316261356).

The spelling of 53304121021 in words is "fifty-three billion, three hundred four million, one hundred twenty-one thousand, twenty-one".