211242144013 has 4 divisors (see below), whose sum is σ = 211248482688. Its totient is φ = 211235805340.

The previous prime is 211242143999. The next prime is 211242144017. The reversal of 211242144013 is 310441242112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211242144013 - 2²¹ = 211240046861 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 (211242144017) 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, 3119083 + ... + 3186088.

It is an arithmetic number, because the mean of its divisors is an integer number (52812120672).

Almost surely, 2^211242144013 is an apocalyptic number.

It is an amenable number.

211242144013 is a deficient number, since it is larger than the sum of its proper divisors (6338675).

211242144013 is an equidigital number, since it uses as much as digits as its factorization.

211242144013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338674.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 211242144013 its reverse (310441242112), we get a palindrome (521683386125).

The spelling of 211242144013 in words is "two hundred eleven billion, two hundred forty-two million, one hundred forty-four thousand, thirteen".