20020021200102 has 128 divisors (see below), whose sum is σ = 50596163813376. Its totient is φ = 5172777588000.

The previous prime is 20020021200089. The next prime is 20020021200131. The reversal of 20020021200102 is 20100212002002.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 9739777 + ... + 11614787.

It is an arithmetic number, because the mean of its divisors is an integer number (395282529792).

Almost surely, 2^{20020021200102} is an apocalyptic number.

20020021200102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020021200102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25298081906688).

20020021200102 is an abundant number, since it is smaller than the sum of its proper divisors (30576142613274).

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

20020021200102 is a wasteful number, since it uses less digits than its factorization.

20020021200102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875247 (or 1875225 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020021200102 its reverse (20100212002002), we get a palindrome (40120233202104).

The spelling of 20020021200102 in words is "twenty trillion, twenty billion, twenty-one million, two hundred thousand, one hundred two".