102111202 has 8 divisors (see below), whose sum is σ = 154683612. Its totient is φ = 50550000.

The previous prime is 102111199. The next prime is 102111203. The reversal of 102111202 is 202111201.

It can be written as a sum of positive squares in 2 ways, for example, as 78481881 + 23629321 = 8859^2 + 4861^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102111203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 252549 + ... + 252952.

Almost surely, 2^102111202 is an apocalyptic number.

102111202 is a deficient number, since it is larger than the sum of its proper divisors (52572410).

102111202 is a wasteful number, since it uses less digits than its factorization.

102111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505604.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 102111202 is about 10105.0087580368. The cubic root of 102111202 is about 467.4026060376.

Adding to 102111202 its reverse (202111201), we get a palindrome (304222403).

Subtracting 102111202 from its reverse (202111201), we obtain a palindrome (99999999).

The spelling of 102111202 in words is "one hundred two million, one hundred eleven thousand, two hundred two".