212012222111 has 8 divisors (see below), whose sum is σ = 227005817760. Its totient is φ = 197298880768.

The previous prime is 212012222021. The next prime is 212012222117. The reversal of 212012222111 is 111222210212.

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

It is a cyclic number.

It is not a de Polignac number, because 212012222111 - 2³⁰ = 210938480287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 212012222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012222117) 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, 70062011 + ... + 70065036.

It is an arithmetic number, because the mean of its divisors is an integer number (28375727220).

Almost surely, 2^212012222111 is an apocalyptic number.

212012222111 is a deficient number, since it is larger than the sum of its proper divisors (14993595649).

212012222111 is a wasteful number, since it uses less digits than its factorization.

212012222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140127153.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212012222111 its reverse (111222210212), we get a palindrome (323234432323).

The spelling of 212012222111 in words is "two hundred twelve billion, twelve million, two hundred twenty-two thousand, one hundred eleven".