211421423141 has 4 divisors (see below), whose sum is σ = 212589497484. Its totient is φ = 210253348800.

The previous prime is 211421423113. The next prime is 211421423183. The reversal of 211421423141 is 141324124112.

211421423141 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 110138360641 + 101283062500 = 331871^2 + 318250^2 .

It is a cyclic number.

It is not a de Polignac number, because 211421423141 - 2⁶ = 211421423077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211421423141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421443141) 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, 584036900 + ... + 584037261.

It is an arithmetic number, because the mean of its divisors is an integer number (53147374371).

Almost surely, 2^211421423141 is an apocalyptic number.

It is an amenable number.

211421423141 is a deficient number, since it is larger than the sum of its proper divisors (1168074343).

211421423141 is a wasteful number, since it uses less digits than its factorization.

211421423141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168074342.

The product of its digits is 1536, while the sum is 26.

Adding to 211421423141 its reverse (141324124112), we get a palindrome (352745547253).

The spelling of 211421423141 in words is "two hundred eleven billion, four hundred twenty-one million, four hundred twenty-three thousand, one hundred forty-one".