201022220021 has 8 divisors (see below), whose sum is σ = 229744865280. Its totient is φ = 172300871088.

The previous prime is 201022220011. The next prime is 201022220023. The reversal of 201022220021 is 120022220102.

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 201022220021 - 2¹⁰ = 201022218997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201022219978 and 201022220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022220023) 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, 34700 + ... + 635018.

It is an arithmetic number, because the mean of its divisors is an integer number (28718108160).

Almost surely, 2^201022220021 is an apocalyptic number.

It is an amenable number.

201022220021 is a deficient number, since it is larger than the sum of its proper divisors (28722645259).

201022220021 is an equidigital number, since it uses as much as digits as its factorization.

201022220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648163.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201022220021 its reverse (120022220102), we get a palindrome (321044440123).

The spelling of 201022220021 in words is "two hundred one billion, twenty-two million, two hundred twenty thousand, twenty-one".