211303132009 has 2 divisors, whose sum is σ = 211303132010. Its totient is φ = 211303132008.

The previous prime is 211303131989. The next prime is 211303132043. The reversal of 211303132009 is 900231303112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160124024025 + 51179107984 = 400155^2 + 226228^2 .

It is a cyclic number.

It is not a de Polignac number, because 211303132009 - 2³⁷ = 73864178537 is a prime.

It is not a weakly prime, because it can be changed into another prime (211303132409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651566004 + 105651566005.

It is an arithmetic number, because the mean of its divisors is an integer number (105651566005).

Almost surely, 2^211303132009 is an apocalyptic number.

It is an amenable number.

211303132009 is a deficient number, since it is larger than the sum of its proper divisors (1).

211303132009 is an equidigital number, since it uses as much as digits as its factorization.

211303132009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 211303132009 in words is "two hundred eleven billion, three hundred three million, one hundred thirty-two thousand, nine".