221431305053 has 8 divisors (see below), whose sum is σ = 257353575360. Its totient is φ = 186581341440.

The previous prime is 221431305037. The next prime is 221431305091. The reversal of 221431305053 is 350503134122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221431305053 - 2⁴ = 221431305037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221431305353) 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, 268076228 + ... + 268077053.

It is an arithmetic number, because the mean of its divisors is an integer number (32169196920).

Almost surely, 2^221431305053 is an apocalyptic number.

It is an amenable number.

221431305053 is a deficient number, since it is larger than the sum of its proper divisors (35922270307).

221431305053 is an equidigital number, since it uses as much as digits as its factorization.

221431305053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536153347.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 221431305053 its reverse (350503134122), we get a palindrome (571934439175).

The spelling of 221431305053 in words is "two hundred twenty-one billion, four hundred thirty-one million, three hundred five thousand, fifty-three".