221183240173 has 12 divisors (see below), whose sum is σ = 270836621760. Its totient is φ = 179607442392.

The previous prime is 221183240087. The next prime is 221183240183. The reversal of 221183240173 is 371042381122.

It is not a de Polignac number, because 221183240173 - 2¹³ = 221183231981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221183240183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118787061 + ... + 118788922.

It is an arithmetic number, because the mean of its divisors is an integer number (22569718480).

Almost surely, 2^221183240173 is an apocalyptic number.

It is an amenable number.

221183240173 is a deficient number, since it is larger than the sum of its proper divisors (49653381587).

221183240173 is a wasteful number, since it uses less digits than its factorization.

221183240173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237576016 (or 237576009 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 221183240173 in words is "two hundred twenty-one billion, one hundred eighty-three million, two hundred forty thousand, one hundred seventy-three".