21221232111411 has 8 divisors (see below), whose sum is σ = 28717289225664. Its totient is φ = 13936331535720.

The previous prime is 21221232111407. The next prime is 21221232111461. The reversal of 21221232111411 is 11411123212212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21221232111411 - 2² = 21221232111407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21221232111461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52789134405 + ... + 52789134806.

It is an arithmetic number, because the mean of its divisors is an integer number (3589661153208).

Almost surely, 2^{21221232111411} is an apocalyptic number.

21221232111411 is a deficient number, since it is larger than the sum of its proper divisors (7496057114253).

21221232111411 is a wasteful number, since it uses less digits than its factorization.

21221232111411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105578269281.

The product of its digits is 384, while the sum is 24.

Adding to 21221232111411 its reverse (11411123212212), we get a palindrome (32632355323623).

The spelling of 21221232111411 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred thirty-two million, one hundred eleven thousand, four hundred eleven".