211553240313000 has 256 divisors, whose sum is σ = 669473969149440. Its totient is φ = 55608709632000.

The previous prime is 211553240312993. The next prime is 211553240313001. The reversal of 211553240313000 is 313042355112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (211553240313001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1114534102 + ... + 1114723898.

It is an arithmetic number, because the mean of its divisors is an integer number (2615132691990).

Almost surely, 2^{211553240313000} is an apocalyptic number.

211553240313000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211553240313000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334736984574720).

211553240313000 is an abundant number, since it is smaller than the sum of its proper divisors (457920728836440).

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

211553240313000 is a wasteful number, since it uses less digits than its factorization.

211553240313000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195125 (or 195111 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 211553240313000 its reverse (313042355112), we get a palindrome (211866282668112).

The spelling of 211553240313000 in words is "two hundred eleven trillion, five hundred fifty-three billion, two hundred forty million, three hundred thirteen thousand".