102212198 has 32 divisors (see below), whose sum is σ = 170529408. Its totient is φ = 45561600.

The previous prime is 102212141. The next prime is 102212213. The reversal of 102212198 is 891212201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450161 + ... + 450387.

It is an arithmetic number, because the mean of its divisors is an integer number (5329044).

Almost surely, 2^102212198 is an apocalyptic number.

102212198 is a deficient number, since it is larger than the sum of its proper divisors (68317210).

102212198 is a wasteful number, since it uses less digits than its factorization.

102212198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102212198 is about 10110.0048466853. The cubic root of 102212198 is about 467.5566545579.

Adding to 102212198 its reverse (891212201), we get a palindrome (993424399).

The spelling of 102212198 in words is "one hundred two million, two hundred twelve thousand, one hundred ninety-eight".