21302331211020 has 48 divisors (see below), whose sum is σ = 59815497782880. Its totient is φ = 5664529238016.

The previous prime is 21302331211001. The next prime is 21302331211037. The reversal of 21302331211020 is 2011213320312.

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, 502866715 + ... + 502909074.

It is an arithmetic number, because the mean of its divisors is an integer number (1246156203810).

Almost surely, 2^{21302331211020} is an apocalyptic number.

21302331211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302331211020 is an abundant number, since it is smaller than the sum of its proper divisors (38513166571860).

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

21302331211020 is a wasteful number, since it uses less digits than its factorization.

21302331211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005776154 (or 1005776152 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21302331211020 its reverse (2011213320312), we get a palindrome (23313544531332).

The spelling of 21302331211020 in words is "twenty-one trillion, three hundred two billion, three hundred thirty-one million, two hundred eleven thousand, twenty".