20021031020304 has 120 divisors (see below), whose sum is σ = 57430410652992. Its totient is φ = 6508979769600.

The previous prime is 20021031020281. The next prime is 20021031020327. The reversal of 20021031020304 is 40302013012002.

20021031020304 is a `hidden beast` number, since 20 + 0 + 2 + 10 + 310 + 20 + 304 = 666.

It is an interprime number because it is at equal distance from previous prime (20021031020281) and next prime (20021031020327).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9298564 + ... + 11247459.

Almost surely, 2^{20021031020304} is an apocalyptic number.

20021031020304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20021031020304 is an abundant number, since it is smaller than the sum of its proper divisors (37409379632688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021031020304 is a wasteful number, since it uses less digits than its factorization.

20021031020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20546205 (or 20546196 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20021031020304 its reverse (40302013012002), we get a palindrome (60323044032306).

The spelling of 20021031020304 in words is "twenty trillion, twenty-one billion, thirty-one million, twenty thousand, three hundred four".