21210230230222 has 64 divisors (see below), whose sum is σ = 37193448196800. Its totient is φ = 8979486208000.

The previous prime is 21210230230213. The next prime is 21210230230237. The reversal of 21210230230222 is 22203203201212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21210230230193 and 21210230230202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227279 + ... + 6883402.

It is an arithmetic number, because the mean of its divisors is an integer number (581147628075).

Almost surely, 2^{21210230230222} is an apocalyptic number.

21210230230222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21210230230222 is a deficient number, since it is larger than the sum of its proper divisors (15983217966578).

21210230230222 is a wasteful number, since it uses less digits than its factorization.

21210230230222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110853.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21210230230222 its reverse (22203203201212), we get a palindrome (43413433431434).

The spelling of 21210230230222 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty million, two hundred thirty thousand, two hundred twenty-two".