211144230202240 has 64 divisors (see below), whose sum is σ = 504774893846160. Its totient is φ = 84456316956672.

The previous prime is 211144230202231. The next prime is 211144230202303. The reversal of 211144230202240 is 42202032441112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 211144230202199 and 211144230202208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37112959 + ... + 42422401.

Almost surely, 2^{211144230202240} is an apocalyptic number.

211144230202240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211144230202240 is an abundant number, since it is smaller than the sum of its proper divisors (293630663643920).

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

211144230202240 is an equidigital number, since it uses as much as digits as its factorization.

211144230202240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371599 (or 5371587 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 211144230202240 its reverse (42202032441112), we get a palindrome (253346262643352).

The spelling of 211144230202240 in words is "two hundred eleven trillion, one hundred forty-four billion, two hundred thirty million, two hundred two thousand, two hundred forty".