212136102 has 96 divisors (see below), whose sum is σ = 509090400. Its totient is φ = 63576576.

The previous prime is 212136053. The next prime is 212136139. The reversal of 212136102 is 201631212.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 723868 + ... + 724160.

It is an arithmetic number, because the mean of its divisors is an integer number (5303025).

Almost surely, 2^212136102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212136102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254545200).

212136102 is an abundant number, since it is smaller than the sum of its proper divisors (296954298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212136102 is a wasteful number, since it uses less digits than its factorization.

212136102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 212136102 is about 14564.8927905426. The cubic root of 212136102 is about 596.4007690668.

Adding to 212136102 its reverse (201631212), we get a palindrome (413767314).

The spelling of 212136102 in words is "two hundred twelve million, one hundred thirty-six thousand, one hundred two".