107213221 has 4 divisors (see below), whose sum is σ = 110671744. Its totient is φ = 103754700.

The previous prime is 107213209. The next prime is 107213243. The reversal of 107213221 is 122312701.

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.

It is a cyclic number.

It is not a de Polignac number, because 107213221 - 2²¹ = 105116069 is a prime.

It is a super-2 number, since 2×107213221² = 22989349514389682, 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 (107213201) 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, 1729215 + ... + 1729276.

It is an arithmetic number, because the mean of its divisors is an integer number (27667936).

Almost surely, 2^107213221 is an apocalyptic number.

It is an amenable number.

107213221 is a deficient number, since it is larger than the sum of its proper divisors (3458523).

107213221 is an equidigital number, since it uses as much as digits as its factorization.

107213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458522.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 107213221 is about 10354.3817294902. The cubic root of 107213221 is about 475.0610758030.

Adding to 107213221 its reverse (122312701), we get a palindrome (229525922).

The spelling of 107213221 in words is "one hundred seven million, two hundred thirteen thousand, two hundred twenty-one".