221132271373 has 32 divisors (see below), whose sum is σ = 261789464160. Its totient is φ = 184819138560.

The previous prime is 221132271361. The next prime is 221132271377. The reversal of 221132271373 is 373172231122.

It can be written as a sum of positive squares in 16 ways, for example, as 151985361609 + 69146909764 = 389853^2 + 262958^2 .

It is a cyclic number.

It is not a de Polignac number, because 221132271373 - 2³³ = 212542336781 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 (221132271377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1713013 + ... + 1837573.

It is an arithmetic number, because the mean of its divisors is an integer number (8180920755).

Almost surely, 2^221132271373 is an apocalyptic number.

It is an amenable number.

221132271373 is a deficient number, since it is larger than the sum of its proper divisors (40657192787).

221132271373 is a wasteful number, since it uses less digits than its factorization.

221132271373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124897.

The product of its digits is 21168, while the sum is 34.

The spelling of 221132271373 in words is "two hundred twenty-one billion, one hundred thirty-two million, two hundred seventy-one thousand, three hundred seventy-three".