21302321211220 has 24 divisors (see below), whose sum is σ = 51125570907264. Its totient is φ = 7303652986656.

The previous prime is 21302321211137. The next prime is 21302321211233. The reversal of 21302321211220 is 2211212320312.

It is a junction number, because it is equal to n+sod(n) for n = 21302321211191 and 21302321211200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76079718472 + ... + 76079718751.

It is an arithmetic number, because the mean of its divisors is an integer number (2130232121136).

Almost surely, 2^{21302321211220} is an apocalyptic number.

21302321211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302321211220 is an abundant number, since it is smaller than the sum of its proper divisors (29823249696044).

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

21302321211220 is a wasteful number, since it uses less digits than its factorization.

21302321211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152159437239 (or 152159437237 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21302321211220 its reverse (2211212320312), we get a palindrome (23513533531532).

The spelling of 21302321211220 in words is "twenty-one trillion, three hundred two billion, three hundred twenty-one million, two hundred eleven thousand, two hundred twenty".