20021011221201 has 8 divisors (see below), whose sum is σ = 27093109712544. Its totient is φ = 13148126772000.

The previous prime is 20021011221187. The next prime is 20021011221209. The reversal of 20021011221201 is 10212211012002.

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

It is not a de Polignac number, because 20021011221201 - 2³¹ = 20018863737553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021011221209) 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, 49803510300 + ... + 49803510701.

It is an arithmetic number, because the mean of its divisors is an integer number (3386638714068).

Almost surely, 2^{20021011221201} is an apocalyptic number.

It is an amenable number.

20021011221201 is a deficient number, since it is larger than the sum of its proper divisors (7072098491343).

20021011221201 is an equidigital number, since it uses as much as digits as its factorization.

20021011221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99607021071.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021011221201 its reverse (10212211012002), we get a palindrome (30233222233203).

The spelling of 20021011221201 in words is "twenty trillion, twenty-one billion, eleven million, two hundred twenty-one thousand, two hundred one".