73108221 has 8 divisors (see below), whose sum is σ = 98482944. Its totient is φ = 48236160.

The previous prime is 73108201. The next prime is 73108223. The reversal of 73108221 is 12280137.

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

It is not a de Polignac number, because 73108221 - 2⁶ = 73108157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73108191 and 73108200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73108223) 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, 125325 + ... + 125906.

It is an arithmetic number, because the mean of its divisors is an integer number (12310368).

Almost surely, 2^73108221 is an apocalyptic number.

It is an amenable number.

73108221 is a deficient number, since it is larger than the sum of its proper divisors (25374723).

73108221 is a wasteful number, since it uses less digits than its factorization.

73108221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251331.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 73108221 is about 8550.3345548581. The cubic root of 73108221 is about 418.1403438146.

Adding to 73108221 its reverse (12280137), we get a palindrome (85388358).

The spelling of 73108221 in words is "seventy-three million, one hundred eight thousand, two hundred twenty-one".