211312133009 has 6 divisors (see below), whose sum is σ = 223019176770. Its totient is φ = 200190441456.

The previous prime is 211312132991. The next prime is 211312133063. The reversal of 211312133009 is 900331213112.

It can be written as a sum of positive squares in only one way, i.e., 201267082384 + 10045050625 = 448628^2 + 100225^2 .

It is not a de Polignac number, because 211312133009 - 2⁸ = 211312132753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211312133089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 292675724 + ... + 292676445.

It is an arithmetic number, because the mean of its divisors is an integer number (37169862795).

Almost surely, 2^211312133009 is an apocalyptic number.

It is an amenable number.

211312133009 is a deficient number, since it is larger than the sum of its proper divisors (11707043761).

211312133009 is an equidigital number, since it uses as much as digits as its factorization.

211312133009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585352207 (or 585352188 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 211312133009 in words is "two hundred eleven billion, three hundred twelve million, one hundred thirty-three thousand, nine".