211203040040 has 32 divisors (see below), whose sum is σ = 475289280360. Its totient is φ = 84466560000.

The previous prime is 211203040039. The next prime is 211203040067. The reversal of 211203040040 is 40040302112.

It can be written as a sum of positive squares in 4 ways, for example, as 184320814276 + 26882225764 = 429326^2 + 163958^2 .

It is a super-3 number, since 3×211203040040³ (a number of 35 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 223061 + ... + 687140.

Almost surely, 2^211203040040 is an apocalyptic number.

211203040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211203040040 is an abundant number, since it is smaller than the sum of its proper divisors (264086240320).

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

211203040040 is a wasteful number, since it uses less digits than its factorization.

211203040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916013 (or 916009 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 211203040040 its reverse (40040302112), we get a palindrome (251243342152).

The spelling of 211203040040 in words is "two hundred eleven billion, two hundred three million, forty thousand, forty".