211010000209949 has 2 divisors, whose sum is σ = 211010000209950. Its totient is φ = 211010000209948.

The previous prime is 211010000209919. The next prime is 211010000210017. The reversal of 211010000209949 is 949902000010112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123791547607225 + 87218452602724 = 11126165^2 + 9339082^2 .

It is a cyclic number.

It is not a de Polignac number, because 211010000209949 - 2⁸ = 211010000209693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211010000209919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505000104974 + 105505000104975.

It is an arithmetic number, because the mean of its divisors is an integer number (105505000104975).

Almost surely, 2^{211010000209949} is an apocalyptic number.

It is an amenable number.

211010000209949 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010000209949 is an equidigital number, since it uses as much as digits as its factorization.

211010000209949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 211010000209949 in words is "two hundred eleven trillion, ten billion, two hundred nine thousand, nine hundred forty-nine".