106125221 has 4 divisors (see below), whose sum is σ = 106290912. Its totient is φ = 105959532.

The previous prime is 106125163. The next prime is 106125233. The reversal of 106125221 is 122521601.

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 an emirpimes, since its reverse is a distinct semiprime: 122521601 = 17 ⋅7207153.

It is a cyclic number.

It is not a de Polignac number, because 106125221 - 2⁶ = 106125157 is a prime.

It is a super-2 number, since 2×106125221² = 22525125064597682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106125193 and 106125202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106125251) 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, 81881 + ... + 83166.

It is an arithmetic number, because the mean of its divisors is an integer number (26572728).

Almost surely, 2^106125221 is an apocalyptic number.

It is an amenable number.

106125221 is a deficient number, since it is larger than the sum of its proper divisors (165691).

106125221 is an equidigital number, since it uses as much as digits as its factorization.

106125221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165690.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 106125221 is about 10301.7096153988. The cubic root of 106125221 is about 473.4486354804.

Adding to 106125221 its reverse (122521601), we get a palindrome (228646822).

The spelling of 106125221 in words is "one hundred six million, one hundred twenty-five thousand, two hundred twenty-one".