106622221 has 4 divisors (see below), whose sum is σ = 106900992. Its totient is φ = 106343452.

The previous prime is 106622203. The next prime is 106622239. The reversal of 106622221 is 122226601.

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 an interprime number because it is at equal distance from previous prime (106622203) and next prime (106622239).

It is a cyclic number.

It is not a de Polignac number, because 106622221 - 2⁵ = 106622189 is a prime.

It is a super-2 number, since 2×106622221² = 22736596021945682, 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 = 106622192 and 106622201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106622251) 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, 138811 + ... + 139576.

It is an arithmetic number, because the mean of its divisors is an integer number (26725248).

Almost surely, 2^106622221 is an apocalyptic number.

It is an amenable number.

106622221 is a deficient number, since it is larger than the sum of its proper divisors (278771).

106622221 is an equidigital number, since it uses as much as digits as its factorization.

106622221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278770.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 106622221 is about 10325.8036491113. The cubic root of 106622221 is about 474.1865612418.

Adding to 106622221 its reverse (122226601), we get a palindrome (228848822).

The spelling of 106622221 in words is "one hundred six million, six hundred twenty-two thousand, two hundred twenty-one".