211242440101 has 16 divisors (see below), whose sum is σ = 268336395648. Its totient is φ = 161498750400.

The previous prime is 211242440083. The next prime is 211242440177. The reversal of 211242440101 is 101044242112.

It is a cyclic number.

It is not a de Polignac number, because 211242440101 - 2¹¹ = 211242438053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211242440501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25877130 + ... + 25885291.

It is an arithmetic number, because the mean of its divisors is an integer number (16771024728).

Almost surely, 2^211242440101 is an apocalyptic number.

It is an amenable number.

211242440101 is a deficient number, since it is larger than the sum of its proper divisors (57093955547).

211242440101 is a wasteful number, since it uses less digits than its factorization.

211242440101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51762492.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211242440101 its reverse (101044242112), we get a palindrome (312286682213).

The spelling of 211242440101 in words is "two hundred eleven billion, two hundred forty-two million, four hundred forty thousand, one hundred one".