107221 has 4 divisors (see below), whose sum is σ = 108000. Its totient is φ = 106444.

The previous prime is 107209. The next prime is 107227. The reversal of 107221 is 122701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 107221 - 2¹¹ = 105173 is a prime.

It is a super-2 number, since 2×107221² = 22992685682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121 + ... + 478.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2¹⁰⁷²²¹ is an apocalyptic number.

It is an amenable number.

107221 is a deficient number, since it is larger than the sum of its proper divisors (779).

107221 is an equidigital number, since it uses as much as digits as its factorization.

107221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 107221 is about 327.4461787836. The cubic root of 107221 is about 47.5072565091.

Adding to 107221 its reverse (122701), we get a palindrome (229922).

The spelling of 107221 in words is "one hundred seven thousand, two hundred twenty-one", and thus it is an iban number.