211203211340 has 24 divisors (see below), whose sum is σ = 483847357392. Its totient is φ = 76801167680.

The previous prime is 211203211339. The next prime is 211203211363. The reversal of 211203211340 is 43112302112.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 480007079 + ... + 480007518.

It is an arithmetic number, because the mean of its divisors is an integer number (20160306558).

Almost surely, 2^211203211340 is an apocalyptic number.

211203211340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211203211340 is an abundant number, since it is smaller than the sum of its proper divisors (272644146052).

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

211203211340 is a wasteful number, since it uses less digits than its factorization.

211203211340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960014617 (or 960014615 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211203211340 its reverse (43112302112), we get a palindrome (254315513452).

The spelling of 211203211340 in words is "two hundred eleven billion, two hundred three million, two hundred eleven thousand, three hundred forty".