102211198 has 4 divisors (see below), whose sum is σ = 153316800. Its totient is φ = 51105598.

The previous prime is 102211163. The next prime is 102211199. The reversal of 102211198 is 891112201.

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 (102211199) by changing a digit.

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, 25552798 + ... + 25552801.

It is an arithmetic number, because the mean of its divisors is an integer number (38329200).

Almost surely, 2^102211198 is an apocalyptic number.

102211198 is a deficient number, since it is larger than the sum of its proper divisors (51105602).

102211198 is an equidigital number, since it uses as much as digits as its factorization.

102211198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51105601.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 102211198 is about 10109.9553906039. The cubic root of 102211198 is about 467.5551297621. Note that the first 3 decimals are identical.

Adding to 102211198 its reverse (891112201), we get a palindrome (993323399).

The spelling of 102211198 in words is "one hundred two million, two hundred eleven thousand, one hundred ninety-eight".