211202129989 has 2 divisors, whose sum is σ = 211202129990. Its totient is φ = 211202129988.

The previous prime is 211202129899. The next prime is 211202130011. The reversal of 211202129989 is 989921202112.

It is a happy number.

Together with previous prime (211202129899) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211201827489 + 302500 = 459567^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202129989 - 2²⁵ = 211168575557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211208129989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601064994 + 105601064995.

It is an arithmetic number, because the mean of its divisors is an integer number (105601064995).

Almost surely, 2^211202129989 is an apocalyptic number.

It is an amenable number.

211202129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202129989 is an equidigital number, since it uses as much as digits as its factorization.

211202129989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 46.

The spelling of 211202129989 in words is "two hundred eleven billion, two hundred two million, one hundred twenty-nine thousand, nine hundred eighty-nine".