21430130222 has 4 divisors (see below), whose sum is σ = 32145195336. Its totient is φ = 10715065110.

The previous prime is 21430130221. The next prime is 21430130279. The reversal of 21430130222 is 22203103412.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21430130194 and 21430130203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430130221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5357532554 + ... + 5357532557.

It is an arithmetic number, because the mean of its divisors is an integer number (8036298834).

Almost surely, 2^21430130222 is an apocalyptic number.

21430130222 is a deficient number, since it is larger than the sum of its proper divisors (10715065114).

21430130222 is a wasteful number, since it uses less digits than its factorization.

21430130222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715065113.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21430130222 its reverse (22203103412), we get a palindrome (43633233634).

The spelling of 21430130222 in words is "twenty-one billion, four hundred thirty million, one hundred thirty thousand, two hundred twenty-two".