21230404107 has 8 divisors (see below), whose sum is σ = 30880587840. Its totient is φ = 12866911560.

The previous prime is 21230404073. The next prime is 21230404109. The reversal of 21230404107 is 70140403212.

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 21230404107 - 2⁷ = 21230403979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230404109) 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, 321672757 + ... + 321672822.

It is an arithmetic number, because the mean of its divisors is an integer number (3860073480).

Almost surely, 2^21230404107 is an apocalyptic number.

21230404107 is a deficient number, since it is larger than the sum of its proper divisors (9650183733).

21230404107 is a wasteful number, since it uses less digits than its factorization.

21230404107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643345593.

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 21230404107 its reverse (70140403212), we get a palindrome (91370807319).

The spelling of 21230404107 in words is "twenty-one billion, two hundred thirty million, four hundred four thousand, one hundred seven".