20021011222201 has 8 divisors (see below), whose sum is σ = 21849572008800. Its totient is φ = 18193861911840.

The previous prime is 20021011222187. The next prime is 20021011222229. The reversal of 20021011222201 is 10222211012002.

It is a happy number.

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 20021011222201 - 2⁷ = 20021011222073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021011202201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352839396 + ... + 352896133.

It is an arithmetic number, because the mean of its divisors is an integer number (2731196501100).

Almost surely, 2^{20021011222201} is an apocalyptic number.

It is an amenable number.

20021011222201 is a deficient number, since it is larger than the sum of its proper divisors (1828560786599).

20021011222201 is a wasteful number, since it uses less digits than its factorization.

20021011222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705738119.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021011222201 its reverse (10222211012002), we get a palindrome (30243222234203).

It can be divided in two parts, 200210 and 11222201, that added together give a palindrome (11422411).

The spelling of 20021011222201 in words is "twenty trillion, twenty-one billion, eleven million, two hundred twenty-two thousand, two hundred one".