20203221212201 has 8 divisors (see below), whose sum is σ = 20581845193224. Its totient is φ = 19826127025920.

The previous prime is 20203221212183. The next prime is 20203221212227. The reversal of 20203221212201 is 10221212230202.

It can be written as a sum of positive squares in 4 ways, for example, as 1753412947225 + 18449808264976 = 1324165^2 + 4295324^2 .

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 20203221212201 - 2¹⁰ = 20203221211177 is a prime.

It is a super-3 number, since 3×20203221212201³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203221212101) 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, 382422026 + ... + 382474851.

It is an arithmetic number, because the mean of its divisors is an integer number (2572730649153).

Almost surely, 2^{20203221212201} is an apocalyptic number.

It is an amenable number.

20203221212201 is a deficient number, since it is larger than the sum of its proper divisors (378623981023).

20203221212201 is an equidigital number, since it uses as much as digits as its factorization.

20203221212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764897371.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20203221212201 its reverse (10221212230202), we get a palindrome (30424433442403).

The spelling of 20203221212201 in words is "twenty trillion, two hundred three billion, two hundred twenty-one million, two hundred twelve thousand, two hundred one".