210211121202149 has 2 divisors, whose sum is σ = 210211121202150. Its totient is φ = 210211121202148.

The previous prime is 210211121202083. The next prime is 210211121202151. The reversal of 210211121202149 is 941202121112012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165609693937249 + 44601427264900 = 12868943^2 + 6678430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210211121202149 is a prime.

Together with 210211121202151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210211121202349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105560601074 + 105105560601075.

It is an arithmetic number, because the mean of its divisors is an integer number (105105560601075).

Almost surely, 2^{210211121202149} is an apocalyptic number.

It is an amenable number.

210211121202149 is a deficient number, since it is larger than the sum of its proper divisors (1).

210211121202149 is an equidigital number, since it uses as much as digits as its factorization.

210211121202149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 210211121202149 in words is "two hundred ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred two thousand, one hundred forty-nine".