20021310101320 has 64 divisors (see below), whose sum is σ = 49765281811200. Its totient is φ = 7188318458880.

The previous prime is 20021310101267. The next prime is 20021310101333. The reversal of 20021310101320 is 2310101312002.

It is a junction number, because it is equal to n+sod(n) for n = 20021310101294 and 20021310101303.

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, 287958769 + ... + 288028288.

It is an arithmetic number, because the mean of its divisors is an integer number (777582528300).

Almost surely, 2^{20021310101320} is an apocalyptic number.

20021310101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021310101320 is an abundant number, since it is smaller than the sum of its proper divisors (29743971709880).

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

20021310101320 is a wasteful number, since it uses less digits than its factorization.

20021310101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575987158 (or 575987154 counting only the distinct ones).

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

Adding to 20021310101320 its reverse (2310101312002), we get a palindrome (22331411413322).

The spelling of 20021310101320 in words is "twenty trillion, twenty-one billion, three hundred ten million, one hundred one thousand, three hundred twenty".