102212252 has 12 divisors (see below), whose sum is σ = 181541640. Its totient is φ = 50343216.

The previous prime is 102212237. The next prime is 102212261. The reversal of 102212252 is 252212201.

It is a self number, because there is not a number n which added to its sum of digits gives 102212252.

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 3 ways as a sum of consecutive naturals, for example, 190427 + ... + 190962.

It is an arithmetic number, because the mean of its divisors is an integer number (15128470).

Almost surely, 2^102212252 is an apocalyptic number.

It is an amenable number.

102212252 is a deficient number, since it is larger than the sum of its proper divisors (79329388).

102212252 is a wasteful number, since it uses less digits than its factorization.

102212252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381460 (or 381458 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102212252 is about 10110.0075173068. The cubic root of 102212252 is about 467.5567368966.

Adding to 102212252 its reverse (252212201), we get a palindrome (354424453).

The spelling of 102212252 in words is "one hundred two million, two hundred twelve thousand, two hundred fifty-two".