102212102 has 4 divisors (see below), whose sum is σ = 153318156. Its totient is φ = 51106050.

The previous prime is 102212059. The next prime is 102212107. The reversal of 102212102 is 201212201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201212201 = 131 ⋅1535971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553024 + ... + 25553027.

It is an arithmetic number, because the mean of its divisors is an integer number (38329539).

Almost surely, 2^102212102 is an apocalyptic number.

102212102 is a deficient number, since it is larger than the sum of its proper divisors (51106054).

102212102 is an equidigital number, since it uses as much as digits as its factorization.

102212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51106053.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102212102 is about 10110.0000989120. Note that the first 4 decimals coincide. The cubic root of 102212102 is about 467.5565081779.

Adding to 102212102 its reverse (201212201), we get a palindrome (303424303).

Subtracting 102212102 from its reverse (201212201), we obtain a palindrome (99000099).

The spelling of 102212102 in words is "one hundred two million, two hundred twelve thousand, one hundred two".