212111102105 has 8 divisors (see below), whose sum is σ = 290895225792. Its totient is φ = 145447612848.

The previous prime is 212111102083. The next prime is 212111102117. The reversal of 212111102105 is 501201111212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212111102105 - 2³² = 207816134809 is a prime.

It is a super-2 number, since 2×212111102105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030158567 + ... + 3030158636.

It is an arithmetic number, because the mean of its divisors is an integer number (36361903224).

Almost surely, 2^212111102105 is an apocalyptic number.

It is an amenable number.

212111102105 is a deficient number, since it is larger than the sum of its proper divisors (78784123687).

212111102105 is an equidigital number, since it uses as much as digits as its factorization.

212111102105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060317215.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 212111102105 its reverse (501201111212), we get a palindrome (713312213317).

The spelling of 212111102105 in words is "two hundred twelve billion, one hundred eleven million, one hundred two thousand, one hundred five".