212242242186 has 48 divisors (see below), whose sum is σ = 495269698560. Its totient is φ = 65300320800.

The previous prime is 212242242181. The next prime is 212242242187. The reversal of 212242242186 is 681242242212.

212242242186 is a `hidden beast` number, since 2 + 1 + 224 + 2 + 2 + 421 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 212242242186.

It is not an unprimeable number, because it can be changed into a prime (212242242181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4081095 + ... + 4132773.

It is an arithmetic number, because the mean of its divisors is an integer number (10318118720).

Almost surely, 2^212242242186 is an apocalyptic number.

212242242186 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

212242242186 is an abundant number, since it is smaller than the sum of its proper divisors (283027456374).

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

212242242186 is a wasteful number, since it uses less digits than its factorization.

212242242186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69251 (or 69248 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

Adding to 212242242186 its reverse (681242242212), we get a palindrome (893484484398).

The spelling of 212242242186 in words is "two hundred twelve billion, two hundred forty-two million, two hundred forty-two thousand, one hundred eighty-six".