211210202121047 has 2 divisors, whose sum is σ = 211210202121048. Its totient is φ = 211210202121046.

The previous prime is 211210202120971. The next prime is 211210202121067. The reversal of 211210202121047 is 740121202012112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211210202121047 - 2²⁴ = 211210185343831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210202121067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605101060523 + 105605101060524.

It is an arithmetic number, because the mean of its divisors is an integer number (105605101060524).

Almost surely, 2^{211210202121047} is an apocalyptic number.

211210202121047 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210202121047 is an equidigital number, since it uses as much as digits as its factorization.

211210202121047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 211210202121047 its reverse (740121202012112), we get a palindrome (951331404133159).

The spelling of 211210202121047 in words is "two hundred eleven trillion, two hundred ten billion, two hundred two million, one hundred twenty-one thousand, forty-seven".