20213303121331 has 4 divisors (see below), whose sum is σ = 20236999843312. Its totient is φ = 20189606399352.

The previous prime is 20213303121329. The next prime is 20213303121343. The reversal of 20213303121331 is 13312130331202.

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

It is a cyclic number.

It is not a de Polignac number, because 20213303121331 - 2¹ = 20213303121329 is a prime.

It is a super-2 number, since 2×20213303121331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213303121296 and 20213303121305.

It is not an unprimeable number, because it can be changed into a prime (20213303121371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11848359711 + ... + 11848361416.

It is an arithmetic number, because the mean of its divisors is an integer number (5059249960828).

Almost surely, 2^{20213303121331} is an apocalyptic number.

20213303121331 is a deficient number, since it is larger than the sum of its proper divisors (23696721981).

20213303121331 is an equidigital number, since it uses as much as digits as its factorization.

20213303121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23696721980.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20213303121331 its reverse (13312130331202), we get a palindrome (33525433452533).

The spelling of 20213303121331 in words is "twenty trillion, two hundred thirteen billion, three hundred three million, one hundred twenty-one thousand, three hundred thirty-one".