20212331203013 has 4 divisors (see below), whose sum is σ = 20212346497068. Its totient is φ = 20212315908960.

The previous prime is 20212331202997. The next prime is 20212331203027. The reversal of 20212331203013 is 31030213321202.

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 515226790849 + 19697104412164 = 717793^2 + 4438142^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212331203013 - 2⁴ = 20212331202997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20212331203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212331202013) 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, 5455256 + ... + 8377617.

It is an arithmetic number, because the mean of its divisors is an integer number (5053086624267).

Almost surely, 2^{20212331203013} is an apocalyptic number.

It is an amenable number.

20212331203013 is a deficient number, since it is larger than the sum of its proper divisors (15294055).

20212331203013 is a wasteful number, since it uses less digits than its factorization.

20212331203013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15294054.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20212331203013 its reverse (31030213321202), we get a palindrome (51242544524215).

The spelling of 20212331203013 in words is "twenty trillion, two hundred twelve billion, three hundred thirty-one million, two hundred three thousand, thirteen".