53530141221 has 28 divisors (see below), whose sum is σ = 81388977120. Its totient is φ = 35184096360.

The previous prime is 53530141193. The next prime is 53530141243. The reversal of 53530141221 is 12214103535.

53530141221 is a `hidden beast` number, since 5 + 3 + 530 + 1 + 4 + 122 + 1 = 666.

It is not a de Polignac number, because 53530141221 - 2²² = 53525946917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53530141261) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 465351 + ... + 568868.

Almost surely, 2^53530141221 is an apocalyptic number.

It is an amenable number.

53530141221 is a deficient number, since it is larger than the sum of its proper divisors (27858835899).

53530141221 is an equidigital number, since it uses as much as digits as its factorization.

53530141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034308 (or 1034293 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 53530141221 its reverse (12214103535), we get a palindrome (65744244756).

The spelling of 53530141221 in words is "fifty-three billion, five hundred thirty million, one hundred forty-one thousand, two hundred twenty-one".