20021331410033 has 8 divisors (see below), whose sum is σ = 20716432701480. Its totient is φ = 19326544155520.

The previous prime is 20021331410009. The next prime is 20021331410051. The reversal of 20021331410033 is 33001413312002.

It can be written as a sum of positive squares in 4 ways, for example, as 483446261809 + 19537885148224 = 695303^2 + 4420168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021331410033 is a prime.

It is a super-2 number, since 2×20021331410033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20021331409990 and 20021331410008.

It is not an unprimeable number, because it can be changed into a prime (20021331413033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78379508 + ... + 78634533.

It is an arithmetic number, because the mean of its divisors is an integer number (2589554087685).

Almost surely, 2^{20021331410033} is an apocalyptic number.

It is an amenable number.

20021331410033 is a deficient number, since it is larger than the sum of its proper divisors (695101291447).

20021331410033 is a wasteful number, since it uses less digits than its factorization.

20021331410033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157018467.

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

Adding to 20021331410033 its reverse (33001413312002), we get a palindrome (53022744722035).

The spelling of 20021331410033 in words is "twenty trillion, twenty-one billion, three hundred thirty-one million, four hundred ten thousand, thirty-three".