21302311332220 has 12 divisors (see below), whose sum is σ = 44734853797704. Its totient is φ = 8520924532880.

The previous prime is 21302311332167. The next prime is 21302311332229. The reversal of 21302311332220 is 2223311320312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302311332229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532557783286 + ... + 532557783325.

It is an arithmetic number, because the mean of its divisors is an integer number (3727904483142).

Almost surely, 2^{21302311332220} is an apocalyptic number.

21302311332220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302311332220 is an abundant number, since it is smaller than the sum of its proper divisors (23432542465484).

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

21302311332220 is a wasteful number, since it uses less digits than its factorization.

21302311332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065115566620 (or 1065115566618 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21302311332220 its reverse (2223311320312), we get a palindrome (23525622652532).

The spelling of 21302311332220 in words is "twenty-one trillion, three hundred two billion, three hundred eleven million, three hundred thirty-two thousand, two hundred twenty".