212211221112151 has 2 divisors, whose sum is σ = 212211221112152. Its totient is φ = 212211221112150.

The previous prime is 212211221112127. The next prime is 212211221112157. The reversal of 212211221112151 is 151211122112212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212211221112151 - 2¹¹ = 212211221110103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212211221112157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105610556075 + 106105610556076.

It is an arithmetic number, because the mean of its divisors is an integer number (106105610556076).

Almost surely, 2^{212211221112151} is an apocalyptic number.

212211221112151 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211221112151 is an equidigital number, since it uses as much as digits as its factorization.

212211221112151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 25.

Adding to 212211221112151 its reverse (151211122112212), we get a palindrome (363422343224363).

The spelling of 212211221112151 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred fifty-one".