21024012411 has 24 divisors (see below), whose sum is σ = 32646481920. Its totient is φ = 12995801136.

The previous prime is 21024012397. The next prime is 21024012433. The reversal of 21024012411 is 11421042012.

21024012411 is a `hidden beast` number, since 2 + 1 + 0 + 240 + 12 + 411 = 666.

It is not a de Polignac number, because 21024012411 - 2¹¹ = 21024010363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21024012311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1299915 + ... + 1315988.

It is an arithmetic number, because the mean of its divisors is an integer number (1360270080).

Almost surely, 2^21024012411 is an apocalyptic number.

21024012411 is a deficient number, since it is larger than the sum of its proper divisors (11622469509).

21024012411 is a wasteful number, since it uses less digits than its factorization.

21024012411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615975 (or 2615972 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21024012411 its reverse (11421042012), we get a palindrome (32445054423).

The spelling of 21024012411 in words is "twenty-one billion, twenty-four million, twelve thousand, four hundred eleven".