21323202032220 has 96 divisors (see below), whose sum is σ = 65709085559040. Its totient is φ = 5123515407360.

The previous prime is 21323202032203. The next prime is 21323202032239. The reversal of 21323202032220 is 2223020232312.

It is a super-2 number, since 2×21323202032220² (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 (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142880650 + ... + 143029809.

It is an arithmetic number, because the mean of its divisors is an integer number (684469641240).

Almost surely, 2^{21323202032220} is an apocalyptic number.

21323202032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323202032220 is an abundant number, since it is smaller than the sum of its proper divisors (44385883526820).

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

21323202032220 is a wasteful number, since it uses less digits than its factorization.

21323202032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285910595 (or 285910593 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21323202032220 its reverse (2223020232312), we get a palindrome (23546222264532).

The spelling of 21323202032220 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred two million, thirty-two thousand, two hundred twenty".