21222032230 has 32 divisors (see below), whose sum is σ = 43672928256. Its totient is φ = 7273429344.

The previous prime is 21222032203. The next prime is 21222032291. The reversal of 21222032230 is 3223022212.

It is a junction number, because it is equal to n+sod(n) for n = 21222032198 and 21222032207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138907 + ... + 248473.

It is an arithmetic number, because the mean of its divisors is an integer number (1364779008).

Almost surely, 2^21222032230 is an apocalyptic number.

21222032230 is an abundant number, since it is smaller than the sum of its proper divisors (22450896026).

21222032230 is a wasteful number, since it uses less digits than its factorization.

21222032230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112348.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21222032230 its reverse (3223022212), we get a palindrome (24445054442).

The spelling of 21222032230 in words is "twenty-one billion, two hundred twenty-two million, thirty-two thousand, two hundred thirty".