212122101100111 has 4 divisors (see below), whose sum is σ = 212123513411224. Its totient is φ = 212120688789000.

The previous prime is 212122101100081. The next prime is 212122101100139. The reversal of 212122101100111 is 111001101221212.

212122101100111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212122101100111 - 2⁵ = 212122101100079 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 (212122101110111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705930240 + ... + 706230661.

It is an arithmetic number, because the mean of its divisors is an integer number (53030878352806).

Almost surely, 2^{212122101100111} is an apocalyptic number.

212122101100111 is a deficient number, since it is larger than the sum of its proper divisors (1412311113).

212122101100111 is a wasteful number, since it uses less digits than its factorization.

212122101100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412311112.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 212122101100111 its reverse (111001101221212), we get a palindrome (323123202321323).

It can be divided in two parts, 212122101 and 100111, that added together give a palindrome (212222212).

The spelling of 212122101100111 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred one million, one hundred thousand, one hundred eleven".