53220221323 has 16 divisors (see below), whose sum is σ = 55247675392. Its totient is φ = 51266082600.

The previous prime is 53220221321. The next prime is 53220221401. The reversal of 53220221323 is 32312202235.

It is not a de Polignac number, because 53220221323 - 2¹ = 53220221321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53220221321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6639388 + ... + 6647398.

It is an arithmetic number, because the mean of its divisors is an integer number (3452979712).

Almost surely, 2^53220221323 is an apocalyptic number.

53220221323 is a deficient number, since it is larger than the sum of its proper divisors (2027454069).

53220221323 is an frugal number, since it uses more digits than its factorization.

53220221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327 (or 8265 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 53220221323 its reverse (32312202235), we get a palindrome (85532423558).

The spelling of 53220221323 in words is "fifty-three billion, two hundred twenty million, two hundred twenty-one thousand, three hundred twenty-three".