211222102001231 has 2 divisors, whose sum is σ = 211222102001232. Its totient is φ = 211222102001230.

The previous prime is 211222102001219. The next prime is 211222102001237. The reversal of 211222102001231 is 132100201222112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211222102001231 is a prime.

It is a super-2 number, since 2×211222102001231² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211222102001237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611051000615 + 105611051000616.

It is an arithmetic number, because the mean of its divisors is an integer number (105611051000616).

Almost surely, 2^{211222102001231} is an apocalyptic number.

211222102001231 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222102001231 is an equidigital number, since it uses as much as digits as its factorization.

211222102001231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211222102001231 its reverse (132100201222112), we get a palindrome (343322303223343).

The spelling of 211222102001231 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, one thousand, two hundred thirty-one".