212102211220111 has 8 divisors (see below), whose sum is σ = 216104576835024. Its totient is φ = 208099861794240.

The previous prime is 212102211220043. The next prime is 212102211220183. The reversal of 212102211220111 is 111022112201212.

It is a happy number.

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 212102211220111 - 2⁹ = 212102211219599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102211226111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24252715 + ... + 31818211.

It is an arithmetic number, because the mean of its divisors is an integer number (27013072104378).

Almost surely, 2^{212102211220111} is an apocalyptic number.

212102211220111 is a deficient number, since it is larger than the sum of its proper divisors (4002365614913).

212102211220111 is an equidigital number, since it uses as much as digits as its factorization.

212102211220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8094521.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212102211220111 its reverse (111022112201212), we get a palindrome (323124323421323).

The spelling of 212102211220111 in words is "two hundred twelve trillion, one hundred two billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".