20331203213333 has 4 divisors (see below), whose sum is σ = 20339888052588. Its totient is φ = 20322518374080.

The previous prime is 20331203213257. The next prime is 20331203213371. The reversal of 20331203213333 is 33331230213302.

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 18258127340209 + 2073075873124 = 4272953^2 + 1439818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331203213333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331203213296 and 20331203213305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331203213933) 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, 4342416116 + ... + 4342420797.

It is an arithmetic number, because the mean of its divisors is an integer number (5084972013147).

Almost surely, 2^{20331203213333} is an apocalyptic number.

It is an amenable number.

20331203213333 is a deficient number, since it is larger than the sum of its proper divisors (8684839255).

20331203213333 is an equidigital number, since it uses as much as digits as its factorization.

20331203213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684839254.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 20331203213333 its reverse (33331230213302), we get a palindrome (53662433426635).

The spelling of 20331203213333 in words is "twenty trillion, three hundred thirty-one billion, two hundred three million, two hundred thirteen thousand, three hundred thirty-three".