12022172606 has 4 divisors (see below), whose sum is σ = 18033258912. Its totient is φ = 6011086302.

The previous prime is 12022172597. The next prime is 12022172609. The reversal of 12022172606 is 60627122021.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022172609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005543150 + ... + 3005543153.

It is an arithmetic number, because the mean of its divisors is an integer number (4508314728).

Almost surely, 2^12022172606 is an apocalyptic number.

12022172606 is a deficient number, since it is larger than the sum of its proper divisors (6011086306).

12022172606 is an equidigital number, since it uses as much as digits as its factorization.

12022172606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011086305.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 12022172606 its reverse (60627122021), we get a palindrome (72649294627).

The spelling of 12022172606 in words is "twelve billion, twenty-two million, one hundred seventy-two thousand, six hundred six".