202012220221 has 8 divisors (see below), whose sum is σ = 231861973824. Its totient is φ = 172410182880.

The previous prime is 202012220213. The next prime is 202012220231. The reversal of 202012220221 is 122022210202.

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 202012220221 - 2³ = 202012220213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202012220195 and 202012220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012220231) 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, 61927315 + ... + 61930576.

It is an arithmetic number, because the mean of its divisors is an integer number (28982746728).

Almost surely, 2^202012220221 is an apocalyptic number.

It is an amenable number.

202012220221 is a deficient number, since it is larger than the sum of its proper divisors (29849753603).

202012220221 is a wasteful number, since it uses less digits than its factorization.

202012220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123858131.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202012220221 its reverse (122022210202), we get a palindrome (324034430423).

It can be divided in two parts, 20201 and 2220221, that added together give a palindrome (2240422).

The spelling of 202012220221 in words is "two hundred two billion, twelve million, two hundred twenty thousand, two hundred twenty-one".