212112211122011 has 16 divisors (see below), whose sum is σ = 223655822676000. Its totient is φ = 200606590660608.

The previous prime is 212112211121953. The next prime is 212112211122029. The reversal of 212112211122011 is 110221112211212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212112211122011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212112211125011) 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, 1345392515 + ... + 1345550163.

It is an arithmetic number, because the mean of its divisors is an integer number (13978488917250).

Almost surely, 2^{212112211122011} is an apocalyptic number.

212112211122011 is a deficient number, since it is larger than the sum of its proper divisors (11543611553989).

212112211122011 is a wasteful number, since it uses less digits than its factorization.

212112211122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277678.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 212112211122011 its reverse (110221112211212), we get a palindrome (322333323333223).

The spelling of 212112211122011 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, eleven".