21130133230 has 16 divisors (see below), whose sum is σ = 38116751904. Its totient is φ = 8433717280.

The previous prime is 21130133191. The next prime is 21130133243. The reversal of 21130133230 is 3233103112.

It is a junction number, because it is equal to n+sod(n) for n = 21130133198 and 21130133207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2287162 + ... + 2296381.

It is an arithmetic number, because the mean of its divisors is an integer number (2382296994).

Almost surely, 2^21130133230 is an apocalyptic number.

21130133230 is a deficient number, since it is larger than the sum of its proper divisors (16986618674).

21130133230 is a wasteful number, since it uses less digits than its factorization.

21130133230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584011.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21130133230 its reverse (3233103112), we get a palindrome (24363236342).

The spelling of 21130133230 in words is "twenty-one billion, one hundred thirty million, one hundred thirty-three thousand, two hundred thirty".