100211689 has 2 divisors, whose sum is σ = 100211690. Its totient is φ = 100211688.

The previous prime is 100211659. The next prime is 100211693. The reversal of 100211689 is 986112001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72386064 + 27825625 = 8508^2 + 5275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100211689 is a prime.

It is a super-2 number, since 2×100211689² = 20084765224465442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100211659) 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, 50105844 + 50105845.

It is an arithmetic number, because the mean of its divisors is an integer number (50105845).

Almost surely, 2^100211689 is an apocalyptic number.

It is an amenable number.

100211689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100211689 is an equidigital number, since it uses as much as digits as its factorization.

100211689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 100211689 is about 10010.5788543920. The cubic root of 100211689 is about 464.4861769545.

The spelling of 100211689 in words is "one hundred million, two hundred eleven thousand, six hundred eighty-nine".