21220230211230 has 32 divisors (see below), whose sum is σ = 51156931682304. Its totient is φ = 5633352592416.

The previous prime is 21220230211181. The next prime is 21220230211259. The reversal of 21220230211230 is 3211203202212.

It is a super-2 number, since 2×21220230211230² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220230211197 and 21220230211206.

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, 1585959694 + ... + 1585973073.

It is an arithmetic number, because the mean of its divisors is an integer number (1598654115072).

Almost surely, 2^{21220230211230} is an apocalyptic number.

21220230211230 is an abundant number, since it is smaller than the sum of its proper divisors (29936701471074).

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

21220230211230 is a wasteful number, since it uses less digits than its factorization.

21220230211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171933000.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21220230211230 its reverse (3211203202212), we get a palindrome (24431433413442).

The spelling of 21220230211230 in words is "twenty-one trillion, two hundred twenty billion, two hundred thirty million, two hundred eleven thousand, two hundred thirty".