212212120111 has 8 divisors (see below), whose sum is σ = 213179356544. Its totient is φ = 211245023520.

The previous prime is 212212120013. The next prime is 212212120121. The reversal of 212212120111 is 111021212212.

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-212212120111 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 (212212120121) 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, 4130521 + ... + 4181581.

It is an arithmetic number, because the mean of its divisors is an integer number (26647419568).

Almost surely, 2^212212120111 is an apocalyptic number.

212212120111 is a deficient number, since it is larger than the sum of its proper divisors (967236433).

212212120111 is a wasteful number, since it uses less digits than its factorization.

212212120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69921.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212212120111 its reverse (111021212212), we get a palindrome (323233332323).

The spelling of 212212120111 in words is "two hundred twelve billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".