99811222 has 8 divisors (see below), whose sum is σ = 171104976. Its totient is φ = 42776232.

The previous prime is 99811211. The next prime is 99811241. The reversal of 99811222 is 22211899.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564673 + ... + 3564700.

It is an arithmetic number, because the mean of its divisors is an integer number (21388122).

Almost surely, 2^99811222 is an apocalyptic number.

99811222 is a deficient number, since it is larger than the sum of its proper divisors (71293754).

99811222 is a wasteful number, since it uses less digits than its factorization.

99811222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129382.

The product of its digits is 5184, while the sum is 34.

The square root of 99811222 is about 9990.5566411487. The cubic root of 99811222 is about 463.8666227572.

The spelling of 99811222 in words is "ninety-nine million, eight hundred eleven thousand, two hundred twenty-two".