212222111210101 has 2 divisors, whose sum is σ = 212222111210102. Its totient is φ = 212222111210100.

The previous prime is 212222111210033. The next prime is 212222111210191. The reversal of 212222111210101 is 101012111222212.

It is a happy number.

212222111210101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136137906874225 + 76084204335876 = 11667815^2 + 8722626^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222111210101 - 2¹⁷ = 212222111079029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212222111210191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111055605050 + 106111055605051.

It is an arithmetic number, because the mean of its divisors is an integer number (106111055605051).

Almost surely, 2^{212222111210101} is an apocalyptic number.

It is an amenable number.

212222111210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222111210101 is an equidigital number, since it uses as much as digits as its factorization.

212222111210101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212222111210101 its reverse (101012111222212), we get a palindrome (313234222432313).

The spelling of 212222111210101 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred eleven million, two hundred ten thousand, one hundred one".