73221116 has 6 divisors (see below), whose sum is σ = 128136960. Its totient is φ = 36610556.

The previous prime is 73221103. The next prime is 73221119. The reversal of 73221116 is 61112237.

It is a super-2 number, since 2×73221116² = 10722663656570912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73221091 and 73221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9152636 + ... + 9152643.

It is an arithmetic number, because the mean of its divisors is an integer number (21356160).

Almost surely, 2^73221116 is an apocalyptic number.

It is an amenable number.

73221116 is a deficient number, since it is larger than the sum of its proper divisors (54915844).

73221116 is a wasteful number, since it uses less digits than its factorization.

73221116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305283 (or 18305281 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 73221116 is about 8556.9337966353. The cubic root of 73221116 is about 418.3554663436.

It can be divided in two parts, 73221 and 116, that added together give a palindrome (73337).

The spelling of 73221116 in words is "seventy-three million, two hundred twenty-one thousand, one hundred sixteen".