211421024413 has 4 divisors (see below), whose sum is σ = 214886942908. Its totient is φ = 207955105920.

The previous prime is 211421024401. The next prime is 211421024431. The reversal of 211421024413 is 314420124112.

211421024413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 101354999769 + 110066024644 = 318363^2 + 331762^2 .

It is a cyclic number.

It is not a de Polignac number, because 211421024413 - 2⁹ = 211421023901 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 (218421024413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732959156 + ... + 1732959277.

It is an arithmetic number, because the mean of its divisors is an integer number (53721735727).

Almost surely, 2^211421024413 is an apocalyptic number.

It is an amenable number.

211421024413 is a deficient number, since it is larger than the sum of its proper divisors (3465918495).

211421024413 is an equidigital number, since it uses as much as digits as its factorization.

211421024413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465918494.

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

Adding to 211421024413 its reverse (314420124112), we get a palindrome (525841148525).

The spelling of 211421024413 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-four thousand, four hundred thirteen".