211410442421 has 16 divisors (see below), whose sum is σ = 219057205248. Its totient is φ = 203816208000.

The previous prime is 211410442403. The next prime is 211410442447. The reversal of 211410442421 is 124244014112.

It is a cyclic number.

It is not a de Polignac number, because 211410442421 - 2¹⁸ = 211410180277 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 (211410492421) 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, 17908721 + ... + 17920521.

It is an arithmetic number, because the mean of its divisors is an integer number (13691075328).

Almost surely, 2^211410442421 is an apocalyptic number.

It is an amenable number.

211410442421 is a deficient number, since it is larger than the sum of its proper divisors (7646762827).

211410442421 is a wasteful number, since it uses less digits than its factorization.

211410442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13972.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 211410442421 its reverse (124244014112), we get a palindrome (335654456533).

The spelling of 211410442421 in words is "two hundred eleven billion, four hundred ten million, four hundred forty-two thousand, four hundred twenty-one".