201200100022001 has 4 divisors (see below), whose sum is σ = 201200133623412. Its totient is φ = 201200066420592.

The previous prime is 201200100021911. The next prime is 201200100022021. The reversal of 201200100022001 is 100220001002102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95346456231601 + 105853643790400 = 9764551^2 + 10288520^2 .

It is a cyclic number.

It is not a de Polignac number, because 201200100022001 - 2¹⁴ = 201200100005617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201200100022021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5104946 + ... + 20699291.

It is an arithmetic number, because the mean of its divisors is an integer number (50300033405853).

Almost surely, 2^{201200100022001} is an apocalyptic number.

It is an amenable number.

201200100022001 is a deficient number, since it is larger than the sum of its proper divisors (33601411).

201200100022001 is an equidigital number, since it uses as much as digits as its factorization.

201200100022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33601410.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201200100022001 its reverse (100220001002102), we get a palindrome (301420101024103).

The spelling of 201200100022001 in words is "two hundred one trillion, two hundred billion, one hundred million, twenty-two thousand, one".