221054530311 has 6 divisors (see below), whose sum is σ = 319300988240. Its totient is φ = 147369686868.

The previous prime is 221054530303. The next prime is 221054530357. The reversal of 221054530311 is 113035450122.

221054530311 is a `hidden beast` number, since 22 + 105 + 4 + 530 + 3 + 1 + 1 = 666.

It is not a de Polignac number, because 221054530311 - 2³ = 221054530303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221054530381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12280807231 + ... + 12280807248.

Almost surely, 2^221054530311 is an apocalyptic number.

221054530311 is a deficient number, since it is larger than the sum of its proper divisors (98246457929).

221054530311 is a wasteful number, since it uses less digits than its factorization.

221054530311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24561614485 (or 24561614482 counting only the distinct ones).

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

Adding to 221054530311 its reverse (113035450122), we get a palindrome (334089980433).

The spelling of 221054530311 in words is "two hundred twenty-one billion, fifty-four million, five hundred thirty thousand, three hundred eleven".