212101022012111 has 2 divisors, whose sum is σ = 212101022012112. Its totient is φ = 212101022012110.

The previous prime is 212101022012107. The next prime is 212101022012123. The reversal of 212101022012111 is 111210220101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212101022012111 - 2² = 212101022012107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212101022012111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101022012161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050511006055 + 106050511006056.

It is an arithmetic number, because the mean of its divisors is an integer number (106050511006056).

Almost surely, 2^{212101022012111} is an apocalyptic number.

212101022012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101022012111 is an equidigital number, since it uses as much as digits as its factorization.

212101022012111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212101022012111 its reverse (111210220101212), we get a palindrome (323311242113323).

The spelling of 212101022012111 in words is "two hundred twelve trillion, one hundred one billion, twenty-two million, twelve thousand, one hundred eleven".