201200122121001 has 4 divisors (see below), whose sum is σ = 268266829494672. Its totient is φ = 134133414747332.

The previous prime is 201200122120931. The next prime is 201200122121017. The reversal of 201200122121001 is 100121221002102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201200122121001 - 2⁷ = 201200122120873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201200122121701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33533353686831 + ... + 33533353686836.

It is an arithmetic number, because the mean of its divisors is an integer number (67066707373668).

Almost surely, 2^{201200122121001} is an apocalyptic number.

It is an amenable number.

201200122121001 is a deficient number, since it is larger than the sum of its proper divisors (67066707373671).

201200122121001 is an equidigital number, since it uses as much as digits as its factorization.

201200122121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67066707373670.

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

Adding to 201200122121001 its reverse (100121221002102), we get a palindrome (301321343123103).

The spelling of 201200122121001 in words is "two hundred one trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, one".