212122222010111 has 16 divisors (see below), whose sum is σ = 250790837912640. Its totient is φ = 175545263685120.

The previous prime is 212122222010089. The next prime is 212122222010113. The reversal of 212122222010111 is 111010222221212.

It is a de Polignac number, because none of the positive numbers 2^k-212122222010111 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 (212122222010113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3785900 + ... + 20942241.

It is an arithmetic number, because the mean of its divisors is an integer number (15674427369540).

Almost surely, 2^{212122222010111} is an apocalyptic number.

212122222010111 is a deficient number, since it is larger than the sum of its proper divisors (38668615902529).

212122222010111 is a wasteful number, since it uses less digits than its factorization.

212122222010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24770434.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212122222010111 its reverse (111010222221212), we get a palindrome (323132444231323).

The spelling of 212122222010111 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, ten thousand, one hundred eleven".