20210020221 has 8 divisors (see below), whose sum is σ = 27875890080. Its totient is φ = 13008748592.

The previous prime is 20210020169. The next prime is 20210020249. The reversal of 20210020221 is 12202001202.

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 20210020221 - 2⁷ = 20210020093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210020197 and 20210020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116149455 + ... + 116149628.

It is an arithmetic number, because the mean of its divisors is an integer number (3484486260).

Almost surely, 2^20210020221 is an apocalyptic number.

It is an amenable number.

20210020221 is a deficient number, since it is larger than the sum of its proper divisors (7665869859).

20210020221 is a wasteful number, since it uses less digits than its factorization.

20210020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232299115.

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

Adding to 20210020221 its reverse (12202001202), we get a palindrome (32412021423).

The spelling of 20210020221 in words is "twenty billion, two hundred ten million, twenty thousand, two hundred twenty-one".