21423441411 has 30 divisors (see below), whose sum is σ = 33144626372. Its totient is φ = 13789757520.

The previous prime is 21423441397. The next prime is 21423441421. The reversal of 21423441411 is 11414432412.

21423441411 is a `hidden beast` number, since 2 + 1 + 4 + 234 + 414 + 11 = 666.

It is not a de Polignac number, because 21423441411 - 2¹¹ = 21423439363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21423441421) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 89125 + ... + 225366.

Almost surely, 2^21423441411 is an apocalyptic number.

21423441411 is a deficient number, since it is larger than the sum of its proper divisors (11721184961).

21423441411 is an equidigital number, since it uses as much as digits as its factorization.

21423441411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314561 (or 314523 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 21423441411 its reverse (11414432412), we get a palindrome (32837873823).

The spelling of 21423441411 in words is "twenty-one billion, four hundred twenty-three million, four hundred forty-one thousand, four hundred eleven".