211140249999 has 32 divisors (see below), whose sum is σ = 322708033536. Its totient is φ = 120288188160.

The previous prime is 211140249997. The next prime is 211140250031. The reversal of 211140249999 is 999942041112.

It is a happy number.

It is a Cunningham number, because it is equal to 459500²-1.

It is not a de Polignac number, because 211140249999 - 2¹ = 211140249997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211140249997) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9638539 + ... + 9660419.

It is an arithmetic number, because the mean of its divisors is an integer number (10084626048).

Almost surely, 2^211140249999 is an apocalyptic number.

211140249999 is a deficient number, since it is larger than the sum of its proper divisors (111567783537).

211140249999 is a wasteful number, since it uses less digits than its factorization.

211140249999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23255.

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 211140249999 in words is "two hundred eleven billion, one hundred forty million, two hundred forty-nine thousand, nine hundred ninety-nine".