20202200021 has 8 divisors (see below), whose sum is σ = 20641791360. Its totient is φ = 19763015328.

The previous prime is 20202200017. The next prime is 20202200069. The reversal of 20202200021 is 12000220202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202200021 - 2² = 20202200017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202199975 and 20202200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202260021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 131 + ... + 201008.

It is an arithmetic number, because the mean of its divisors is an integer number (2580223920).

Almost surely, 2^20202200021 is an apocalyptic number.

It is an amenable number.

20202200021 is a deficient number, since it is larger than the sum of its proper divisors (439591339).

20202200021 is a wasteful number, since it uses less digits than its factorization.

20202200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203323.

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

Adding to 20202200021 its reverse (12000220202), we get a palindrome (32202420223).

The spelling of 20202200021 in words is "twenty billion, two hundred two million, two hundred thousand, twenty-one".