21320023220230 has 32 divisors (see below), whose sum is σ = 45043693851456. Its totient is φ = 7112162185344.

The previous prime is 21320023220189. The next prime is 21320023220273. The reversal of 21320023220230 is 3202232002312.

It is a super-2 number, since 2×21320023220230² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4115832009 + ... + 4115837188.

It is an arithmetic number, because the mean of its divisors is an integer number (1407615432858).

Almost surely, 2^{21320023220230} is an apocalyptic number.

21320023220230 is an abundant number, since it is smaller than the sum of its proper divisors (23723670631226).

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

21320023220230 is a wasteful number, since it uses less digits than its factorization.

21320023220230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231669248.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21320023220230 its reverse (3202232002312), we get a palindrome (24522255222542).

The spelling of 21320023220230 in words is "twenty-one trillion, three hundred twenty billion, twenty-three million, two hundred twenty thousand, two hundred thirty".