211098961919 has 2 divisors, whose sum is σ = 211098961920. Its totient is φ = 211098961918.

The previous prime is 211098961907. The next prime is 211098961973. The reversal of 211098961919 is 919169890112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211098961919 - 2⁴ = 211098961903 is a prime.

It is a super-4 number, since 4×211098961919⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211098901919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105549480959 + 105549480960.

It is an arithmetic number, because the mean of its divisors is an integer number (105549480960).

Almost surely, 2^211098961919 is an apocalyptic number.

211098961919 is a deficient number, since it is larger than the sum of its proper divisors (1).

211098961919 is an equidigital number, since it uses as much as digits as its factorization.

211098961919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 56.

The spelling of 211098961919 in words is "two hundred eleven billion, ninety-eight million, nine hundred sixty-one thousand, nine hundred nineteen".