201001100200121 has 8 divisors (see below), whose sum is σ = 216511030144584. Its totient is φ = 185498071234560.

The previous prime is 201001100200111. The next prime is 201001100200151. The reversal of 201001100200121 is 121002001100102.

It can be written as a sum of positive squares in 4 ways, for example, as 16838178799225 + 184162921400896 = 4103435^2 + 13570664^2 .

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 201001100200121 - 2¹⁸ = 201001099937977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201001100200111) 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, 1725184226 + ... + 1725300731.

It is an arithmetic number, because the mean of its divisors is an integer number (27063878768073).

Almost surely, 2^{201001100200121} is an apocalyptic number.

It is an amenable number.

201001100200121 is a deficient number, since it is larger than the sum of its proper divisors (15509929944463).

201001100200121 is a wasteful number, since it uses less digits than its factorization.

201001100200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450489451.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201001100200121 its reverse (121002001100102), we get a palindrome (322003101300223).

The spelling of 201001100200121 in words is "two hundred one trillion, one billion, one hundred million, two hundred thousand, one hundred twenty-one".