212115106 has 32 divisors (see below), whose sum is σ = 378253440. Its totient is φ = 87284736.

The previous prime is 212115097. The next prime is 212115119. The reversal of 212115106 is 601511212.

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 15 ways as a sum of consecutive naturals, for example, 77005 + ... + 79711.

It is an arithmetic number, because the mean of its divisors is an integer number (11820420).

Almost surely, 2^212115106 is an apocalyptic number.

212115106 is a deficient number, since it is larger than the sum of its proper divisors (166138334).

212115106 is a wasteful number, since it uses less digits than its factorization.

212115106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 212115106 is about 14564.1719984351. The cubic root of 212115106 is about 596.3810923222.

Adding to 212115106 its reverse (601511212), we get a palindrome (813626318).

The spelling of 212115106 in words is "two hundred twelve million, one hundred fifteen thousand, one hundred six".