211122047 has 2 divisors, whose sum is σ = 211122048. Its totient is φ = 211122046.

The previous prime is 211122013. The next prime is 211122071. The reversal of 211122047 is 740221112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211122047 - 2⁶ = 211121983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211122007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561023 + 105561024.

It is an arithmetic number, because the mean of its divisors is an integer number (105561024).

Almost surely, 2^211122047 is an apocalyptic number.

211122047 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122047 is an equidigital number, since it uses as much as digits as its factorization.

211122047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 211122047 is about 14530.0394700083. The cubic root of 211122047 is about 595.4489439461.

Adding to 211122047 its reverse (740221112), we get a palindrome (951343159).

The spelling of 211122047 in words is "two hundred eleven million, one hundred twenty-two thousand, forty-seven".