21230044401 has 8 divisors (see below), whose sum is σ = 28997133984. Its totient is φ = 13808158880.

The previous prime is 21230044393. The next prime is 21230044411. The reversal of 21230044401 is 10444003212.

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

It is a cyclic number.

It is not a de Polignac number, because 21230044401 - 2³ = 21230044393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230044411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86300871 + ... + 86301116.

It is an arithmetic number, because the mean of its divisors is an integer number (3624641748).

Almost surely, 2^21230044401 is an apocalyptic number.

It is an amenable number.

21230044401 is a deficient number, since it is larger than the sum of its proper divisors (7767089583).

21230044401 is a wasteful number, since it uses less digits than its factorization.

21230044401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172602031.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21230044401 its reverse (10444003212), we get a palindrome (31674047613).

The spelling of 21230044401 in words is "twenty-one billion, two hundred thirty million, forty-four thousand, four hundred one".