222171722 has 8 divisors (see below), whose sum is σ = 333423972. Its totient is φ = 111030400.

The previous prime is 222171689. The next prime is 222171727. The reversal of 222171722 is 227171222.

It can be written as a sum of positive squares in 2 ways, for example, as 206813161 + 15358561 = 14381^2 + 3919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 222171691 and 222171700.

It is not an unprimeable number, because it can be changed into a prime (222171727) 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 in 3 ways as a sum of consecutive naturals, for example, 22529 + ... + 30852.

Almost surely, 2^222171722 is an apocalyptic number.

222171722 is a deficient number, since it is larger than the sum of its proper divisors (111252250).

222171722 is a wasteful number, since it uses less digits than its factorization.

222171722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55464.

The product of its digits is 1568, while the sum is 26.

The square root of 222171722 is about 14905.4259248101. The cubic root of 222171722 is about 605.6609783045.

The spelling of 222171722 in words is "two hundred twenty-two million, one hundred seventy-one thousand, seven hundred twenty-two".