212211101120111 has 4 divisors (see below), whose sum is σ = 215118102505392. Its totient is φ = 209304099734832.

The previous prime is 212211101120107. The next prime is 212211101120113. The reversal of 212211101120111 is 111021101112212.

212211101120111 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 212211101120111 - 2² = 212211101120107 is a prime.

It is a super-2 number, since 2×212211101120111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212211101120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211101120113) 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, 1453500692531 + ... + 1453500692676.

It is an arithmetic number, because the mean of its divisors is an integer number (53779525626348).

Almost surely, 2^{212211101120111} is an apocalyptic number.

212211101120111 is a deficient number, since it is larger than the sum of its proper divisors (2907001385281).

212211101120111 is an equidigital number, since it uses as much as digits as its factorization.

212211101120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907001385280.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212211101120111 its reverse (111021101112212), we get a palindrome (323232202232323).

The spelling of 212211101120111 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred one million, one hundred twenty thousand, one hundred eleven".