20021220200002 has 16 divisors (see below), whose sum is σ = 34322875486272. Its totient is φ = 8580327014160.

The previous prime is 20021220199997. The next prime is 20021220200081. The reversal of 20021220200002 is 20000202212002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15691524 + ... + 16919407.

It is an arithmetic number, because the mean of its divisors is an integer number (2145179717892).

Almost surely, 2^{20021220200002} is an apocalyptic number.

20021220200002 is a deficient number, since it is larger than the sum of its proper divisors (14301655286270).

20021220200002 is a wasteful number, since it uses less digits than its factorization.

20021220200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32654793.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20021220200002 its reverse (20000202212002), we get a palindrome (40021422412004).

The spelling of 20021220200002 in words is "twenty trillion, twenty-one billion, two hundred twenty million, two hundred thousand, two".