105221722 has 4 divisors (see below), whose sum is σ = 157832586. Its totient is φ = 52610860.

The previous prime is 105221717. The next prime is 105221723. The reversal of 105221722 is 227122501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96805921 + 8415801 = 9839^2 + 2901^2 .

It is a super-2 number, since 2×105221722² = 22143221561290568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105221693 and 105221702.

It is not an unprimeable number, because it can be changed into a prime (105221723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26305429 + ... + 26305432.

Almost surely, 2^105221722 is an apocalyptic number.

105221722 is a deficient number, since it is larger than the sum of its proper divisors (52610864).

105221722 is an equidigital number, since it uses as much as digits as its factorization.

105221722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52610863.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 105221722 is about 10257.7639863666. The cubic root of 105221722 is about 472.1012333135.

The spelling of 105221722 in words is "one hundred five million, two hundred twenty-one thousand, seven hundred twenty-two".