221116622 has 4 divisors (see below), whose sum is σ = 331674936. Its totient is φ = 110558310.

The previous prime is 221116607. The next prime is 221116631. The reversal of 221116622 is 226611122.

It is a happy number.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55279154 + ... + 55279157.

It is an arithmetic number, because the mean of its divisors is an integer number (82918734).

Almost surely, 2^221116622 is an apocalyptic number.

221116622 is a deficient number, since it is larger than the sum of its proper divisors (110558314).

221116622 is a wasteful number, since it uses less digits than its factorization.

221116622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110558313.

The product of its digits is 576, while the sum is 23.

The square root of 221116622 is about 14869.9906523172. The cubic root of 221116622 is about 604.7006893214.

Adding to 221116622 its reverse (226611122), we get a palindrome (447727744).

The spelling of 221116622 in words is "two hundred twenty-one million, one hundred sixteen thousand, six hundred twenty-two".