20010313012021 has 4 divisors (see below), whose sum is σ = 20284426888972. Its totient is φ = 19736199135072.

The previous prime is 20010313011971. The next prime is 20010313012033. The reversal of 20010313012021 is 12021031301002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15668028057796 + 4342284954225 = 3958286^2 + 2083815^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010313012021 - 2¹⁹ = 20010312487733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010313011986 and 20010313012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010313012321) 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, 137056938366 + ... + 137056938511.

It is an arithmetic number, because the mean of its divisors is an integer number (5071106722243).

Almost surely, 2^{20010313012021} is an apocalyptic number.

It is an amenable number.

20010313012021 is a deficient number, since it is larger than the sum of its proper divisors (274113876951).

20010313012021 is an equidigital number, since it uses as much as digits as its factorization.

20010313012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274113876950.

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

Adding to 20010313012021 its reverse (12021031301002), we get a palindrome (32031344313023).

The spelling of 20010313012021 in words is "twenty trillion, ten billion, three hundred thirteen million, twelve thousand, twenty-one".