212211121210111 has 8 divisors (see below), whose sum is σ = 217492068605184. Its totient is φ = 206962082863320.

The previous prime is 212211121210087. The next prime is 212211121210157. The reversal of 212211121210111 is 111012121112212.

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

It is a de Polignac number, because none of the positive numbers 2^k-212211121210111 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 (212211121210181) 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, 7977248605 + ... + 7977275206.

It is an arithmetic number, because the mean of its divisors is an integer number (27186508575648).

Almost surely, 2^{212211121210111} is an apocalyptic number.

212211121210111 is a deficient number, since it is larger than the sum of its proper divisors (5280947395073).

212211121210111 is a wasteful number, since it uses less digits than its factorization.

212211121210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954524141.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212211121210111 its reverse (111012121112212), we get a palindrome (323223242322323).

The spelling of 212211121210111 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".