21230130004 has 12 divisors (see below), whose sum is σ = 37707246304. Its totient is φ = 10456631064.

The previous prime is 21230129951. The next prime is 21230130029. The reversal of 21230130004 is 40003103212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21230130004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39608184 + ... + 39608719.

Almost surely, 2^21230130004 is an apocalyptic number.

It is an amenable number.

21230130004 is a deficient number, since it is larger than the sum of its proper divisors (16477116300).

21230130004 is a wasteful number, since it uses less digits than its factorization.

21230130004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79216974 (or 79216972 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21230130004 its reverse (40003103212), we get a palindrome (61233233216).

The spelling of 21230130004 in words is "twenty-one billion, two hundred thirty million, one hundred thirty thousand, four".