21134423424401 has 8 divisors (see below), whose sum is σ = 24315731649600. Its totient is φ = 17993641418928.

The previous prime is 21134423424313. The next prime is 21134423424461. The reversal of 21134423424401 is 10442432443112.

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

It is a de Polignac number, because none of the positive numbers 2^k-21134423424401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21134423424461) 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, 10131553811 + ... + 10131555896.

It is an arithmetic number, because the mean of its divisors is an integer number (3039466456200).

Almost surely, 2^{21134423424401} is an apocalyptic number.

It is an amenable number.

21134423424401 is a deficient number, since it is larger than the sum of its proper divisors (3181308225199).

21134423424401 is a wasteful number, since it uses less digits than its factorization.

21134423424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20263109863.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 21134423424401 its reverse (10442432443112), we get a palindrome (31576855867513).

The spelling of 21134423424401 in words is "twenty-one trillion, one hundred thirty-four billion, four hundred twenty-three million, four hundred twenty-four thousand, four hundred one".