211304023210240 has 36 divisors (see below), whose sum is σ = 506139168098844. Its totient is φ = 84521609283584.

The previous prime is 211304023210207. The next prime is 211304023210339. The reversal of 211304023210240 is 42012320403112.

It can be written as a sum of positive squares in 2 ways, for example, as 125722578161664 + 85581445048576 = 11212608^2 + 9251024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82540632787 + ... + 82540635346.

It is an arithmetic number, because the mean of its divisors is an integer number (14059421336079).

Almost surely, 2^{211304023210240} is an apocalyptic number.

211304023210240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211304023210240 is an abundant number, since it is smaller than the sum of its proper divisors (294835144888604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211304023210240 is an equidigital number, since it uses as much as digits as its factorization.

211304023210240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165081268154 (or 165081268140 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211304023210240 its reverse (42012320403112), we get a palindrome (253316343613352).

The spelling of 211304023210240 in words is "two hundred eleven trillion, three hundred four billion, twenty-three million, two hundred ten thousand, two hundred forty".