20022000200021 has 8 divisors (see below), whose sum is σ = 20892824232000. Its totient is φ = 19151201358432.

The previous prime is 20022000200011. The next prime is 20022000200051. The reversal of 20022000200021 is 12000200022002.

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-20022000200021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022000199975 and 20022000200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022000200011) by changing a digit.

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, 4664360 + ... + 7861313.

It is an arithmetic number, because the mean of its divisors is an integer number (2611603029000).

Almost surely, 2^{20022000200021} is an apocalyptic number.

It is an amenable number.

20022000200021 is a deficient number, since it is larger than the sum of its proper divisors (870824031979).

20022000200021 is a wasteful number, since it uses less digits than its factorization.

20022000200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12595195.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20022000200021 its reverse (12000200022002), we get a palindrome (32022200222023).

The spelling of 20022000200021 in words is "twenty trillion, twenty-two billion, two hundred thousand, twenty-one".