21412021411 has 4 divisors (see below), whose sum is σ = 23358568824. Its totient is φ = 19465474000.

The previous prime is 21412021391. The next prime is 21412021427. The reversal of 21412021411 is 11412021412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21412021411 - 2²⁷ = 21277803683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21412001411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973273690 + ... + 973273711.

It is an arithmetic number, because the mean of its divisors is an integer number (5839642206).

Almost surely, 2^21412021411 is an apocalyptic number.

21412021411 is a deficient number, since it is larger than the sum of its proper divisors (1946547413).

21412021411 is a wasteful number, since it uses less digits than its factorization.

21412021411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946547412.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21412021411 its reverse (11412021412), we get a palindrome (32824042823).

Subtracting from 21412021411 its reverse (11412021412), we obtain a palindrome (9999999999).

The spelling of 21412021411 in words is "twenty-one billion, four hundred twelve million, twenty-one thousand, four hundred eleven".