20021002220102 has 48 divisors (see below), whose sum is σ = 32999485792608. Its totient is φ = 9104196890880.

The previous prime is 20021002220081. The next prime is 20021002220117. The reversal of 20021002220102 is 20102220012002.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 35549618 + ... + 36108410.

It is an arithmetic number, because the mean of its divisors is an integer number (687489287346).

Almost surely, 2^{20021002220102} is an apocalyptic number.

20021002220102 is a deficient number, since it is larger than the sum of its proper divisors (12978483572506).

20021002220102 is a wasteful number, since it uses less digits than its factorization.

20021002220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560385 (or 560372 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20021002220102 its reverse (20102220012002), we get a palindrome (40123222232104).

The spelling of 20021002220102 in words is "twenty trillion, twenty-one billion, two million, two hundred twenty thousand, one hundred two".