21130222330 has 32 divisors (see below), whose sum is σ = 44642699136. Its totient is φ = 7048845504.

The previous prime is 21130222303. The next prime is 21130222339. The reversal of 21130222330 is 3322203112.

It is a junction number, because it is equal to n+sod(n) for n = 21130222298 and 21130222307.

It is not an unprimeable number, because it can be changed into a prime (21130222339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4076604 + ... + 4081783.

It is an arithmetic number, because the mean of its divisors is an integer number (1395084348).

Almost surely, 2^21130222330 is an apocalyptic number.

21130222330 is an abundant number, since it is smaller than the sum of its proper divisors (23512476806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21130222330 is a wasteful number, since it uses less digits than its factorization.

21130222330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158438.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21130222330 its reverse (3322203112), we get a palindrome (24452425442).

The spelling of 21130222330 in words is "twenty-one billion, one hundred thirty million, two hundred twenty-two thousand, three hundred thirty".