164131222 has 4 divisors (see below), whose sum is σ = 246196836. Its totient is φ = 82065610.

The previous prime is 164131217. The next prime is 164131237. The reversal of 164131222 is 222131461.

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

It is a junction number, because it is equal to n+sod(n) for n = 164131193 and 164131202.

It is a congruent number.

It is an unprimeable number.

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, 41032804 + ... + 41032807.

It is an arithmetic number, because the mean of its divisors is an integer number (61549209).

Almost surely, 2^164131222 is an apocalyptic number.

164131222 is a deficient number, since it is larger than the sum of its proper divisors (82065614).

164131222 is an equidigital number, since it uses as much as digits as its factorization.

164131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82065613.

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

The square root of 164131222 is about 12811.3708087776. The cubic root of 164131222 is about 547.5163184672.

Adding to 164131222 its reverse (222131461), we get a palindrome (386262683).

The spelling of 164131222 in words is "one hundred sixty-four million, one hundred thirty-one thousand, two hundred twenty-two".