212212110101111 has 8 divisors (see below), whose sum is σ = 221465503165920. Its totient is φ = 202960948668192.

The previous prime is 212212110101077. The next prime is 212212110101119. The reversal of 212212110101111 is 111101011212212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212110101111 is a prime.

It is a super-3 number, since 3×212212110101111³ (a number of 44 digits) contains 333 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 212212110101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212110101119) 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, 557713640 + ... + 558094013.

It is an arithmetic number, because the mean of its divisors is an integer number (27683187895740).

Almost surely, 2^{212212110101111} is an apocalyptic number.

212212110101111 is a deficient number, since it is larger than the sum of its proper divisors (9253393064809).

212212110101111 is a wasteful number, since it uses less digits than its factorization.

212212110101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115815945.

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

Adding to 212212110101111 its reverse (111101011212212), we get a palindrome (323313121313323).

The spelling of 212212110101111 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred ten million, one hundred one thousand, one hundred eleven".