210321100949 has 2 divisors, whose sum is σ = 210321100950. Its totient is φ = 210321100948.

The previous prime is 210321100931. The next prime is 210321100963. The reversal of 210321100949 is 949001123012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199681178449 + 10639922500 = 446857^2 + 103150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210321100949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210321105949) 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, 105160550474 + 105160550475.

It is an arithmetic number, because the mean of its divisors is an integer number (105160550475).

Almost surely, 2^210321100949 is an apocalyptic number.

It is an amenable number.

210321100949 is a deficient number, since it is larger than the sum of its proper divisors (1).

210321100949 is an equidigital number, since it uses as much as digits as its factorization.

210321100949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 210321100949 in words is "two hundred ten billion, three hundred twenty-one million, one hundred thousand, nine hundred forty-nine".