21230104401 has 32 divisors (see below), whose sum is σ = 34379735040. Its totient is φ = 12841059600.

The previous prime is 21230104381. The next prime is 21230104409. The reversal of 21230104401 is 10440103212.

21230104401 is a `hidden beast` number, since 21 + 230 + 10 + 4 + 401 = 666.

It is not a de Polignac number, because 21230104401 - 2⁹ = 21230103889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21230104409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78336 + ... + 220446.

It is an arithmetic number, because the mean of its divisors is an integer number (1074366720).

Almost surely, 2^21230104401 is an apocalyptic number.

It is an amenable number.

21230104401 is a deficient number, since it is larger than the sum of its proper divisors (13149630639).

21230104401 is a wasteful number, since it uses less digits than its factorization.

21230104401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142634 (or 142628 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21230104401 its reverse (10440103212), we get a palindrome (31670207613).

The spelling of 21230104401 in words is "twenty-one billion, two hundred thirty million, one hundred four thousand, four hundred one".