211441640141 has 4 divisors (see below), whose sum is σ = 213312805212. Its totient is φ = 209570475072.

The previous prime is 211441640107. The next prime is 211441640209. The reversal of 211441640141 is 141046144112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2748904900 + 208692735241 = 52430^2 + 456829^2 .

It is a cyclic number.

It is not a de Polignac number, because 211441640141 - 2¹⁸ = 211441377997 is a prime.

It is a super-2 number, since 2×211441640141² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211441649141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935582366 + ... + 935582591.

It is an arithmetic number, because the mean of its divisors is an integer number (53328201303).

Almost surely, 2^211441640141 is an apocalyptic number.

It is an amenable number.

211441640141 is a deficient number, since it is larger than the sum of its proper divisors (1871165071).

211441640141 is a wasteful number, since it uses less digits than its factorization.

211441640141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871165070.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 211441640141 its reverse (141046144112), we get a palindrome (352487784253).

The spelling of 211441640141 in words is "two hundred eleven billion, four hundred forty-one million, six hundred forty thousand, one hundred forty-one".