72222106 has 16 divisors (see below), whose sum is σ = 119116800. Its totient is φ = 32568480.

The previous prime is 72222091. The next prime is 72222107. The reversal of 72222106 is 60122227.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (72222107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10131 + ... + 15718.

It is an arithmetic number, because the mean of its divisors is an integer number (7444800).

Almost surely, 2^72222106 is an apocalyptic number.

72222106 is a deficient number, since it is larger than the sum of its proper divisors (46894694).

72222106 is a wasteful number, since it uses less digits than its factorization.

72222106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25989.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 72222106 is about 8498.3590180693. The cubic root of 72222106 is about 416.4441024353. Note that the first 3 decimals are identical.

72222106 divided by its sum of digits (22) gives a palindrome (3282823).

The spelling of 72222106 in words is "seventy-two million, two hundred twenty-two thousand, one hundred six".