201001200120221 has 8 divisors (see below), whose sum is σ = 203264482370040. Its totient is φ = 198738025466112.

The previous prime is 201001200120211. The next prime is 201001200120247. The reversal of 201001200120221 is 122021002100102.

It can be written as a sum of positive squares in 4 ways, for example, as 87058491504196 + 113942708616025 = 9330514^2 + 10674395^2 .

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 201001200120221 - 2³⁴ = 200984020251037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201001200120196 and 201001200120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001200120211) 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, 23138720 + ... + 30617033.

It is an arithmetic number, because the mean of its divisors is an integer number (25408060296255).

Almost surely, 2^{201001200120221} is an apocalyptic number.

It is an amenable number.

201001200120221 is a deficient number, since it is larger than the sum of its proper divisors (2263282249819).

201001200120221 is an equidigital number, since it uses as much as digits as its factorization.

201001200120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53797855.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201001200120221 its reverse (122021002100102), we get a palindrome (323022202220323).

The spelling of 201001200120221 in words is "two hundred one trillion, one billion, two hundred million, one hundred twenty thousand, two hundred twenty-one".