21421441134411 has 8 divisors (see below), whose sum is σ = 28565622712464. Its totient is φ = 14279110156320.

The previous prime is 21421441134403. The next prime is 21421441134413. The reversal of 21421441134411 is 11443114412412.

It is a happy number.

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

It is not a de Polignac number, because 21421441134411 - 2³ = 21421441134403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21421441134413) 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, 462622980 + ... + 462669281.

It is an arithmetic number, because the mean of its divisors is an integer number (3570702839058).

Almost surely, 2^{21421441134411} is an apocalyptic number.

21421441134411 is a deficient number, since it is larger than the sum of its proper divisors (7144181578053).

21421441134411 is an equidigital number, since it uses as much as digits as its factorization.

21421441134411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925299981.

The product of its digits is 12288, while the sum is 33.

Adding to 21421441134411 its reverse (11443114412412), we get a palindrome (32864555546823).

The spelling of 21421441134411 in words is "twenty-one trillion, four hundred twenty-one billion, four hundred forty-one million, one hundred thirty-four thousand, four hundred eleven".