211210140411220 has 48 divisors (see below), whose sum is σ = 445251261626640. Its totient is φ = 84158602407936.

The previous prime is 211210140411217. The next prime is 211210140411239. The reversal of 211210140411220 is 22114041012112.

It can be written as a sum of positive squares in 8 ways, for example, as 15453216999364 + 195756923411856 = 3931058^2 + 13991316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211210140411191 and 211210140411200.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5353924 + ... + 21238756.

It is an arithmetic number, because the mean of its divisors is an integer number (9276067950555).

Almost surely, 2^{211210140411220} is an apocalyptic number.

211210140411220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210140411220 is an abundant number, since it is smaller than the sum of its proper divisors (234041121215420).

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

211210140411220 is a wasteful number, since it uses less digits than its factorization.

211210140411220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15887404 (or 15887402 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211210140411220 its reverse (22114041012112), we get a palindrome (233324181423332).

The spelling of 211210140411220 in words is "two hundred eleven trillion, two hundred ten billion, one hundred forty million, four hundred eleven thousand, two hundred twenty".