21313201010020 has 48 divisors (see below), whose sum is σ = 47214277306560. Its totient is φ = 8059286761344.

The previous prime is 21313201009999. The next prime is 21313201010083. The reversal of 21313201010020 is 2001010231312.

It is a junction number, because it is equal to n+sod(n) for n = 21313201009976 and 21313201010003.

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 15 ways as a sum of consecutive naturals, for example, 59873259 + ... + 60228178.

It is an arithmetic number, because the mean of its divisors is an integer number (983630777220).

Almost surely, 2^{21313201010020} is an apocalyptic number.

21313201010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313201010020 is an abundant number, since it is smaller than the sum of its proper divisors (25901076296540).

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

21313201010020 is a wasteful number, since it uses less digits than its factorization.

21313201010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120101932 (or 120101930 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21313201010020 its reverse (2001010231312), we get a palindrome (23314211241332).

The spelling of 21313201010020 in words is "twenty-one trillion, three hundred thirteen billion, two hundred one million, ten thousand, twenty".