201001100002121 has 16 divisors (see below), whose sum is σ = 202607187045120. Its totient is φ = 199399242369600.

The previous prime is 201001100002091. The next prime is 201001100002169. The reversal of 201001100002121 is 121200001100102.

It is a cyclic number.

It is not a de Polignac number, because 201001100002121 - 2²² = 201001095807817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201001100002321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608119820 + ... + 608450258.

It is an arithmetic number, because the mean of its divisors is an integer number (12662949190320).

Almost surely, 2^{201001100002121} is an apocalyptic number.

It is an amenable number.

201001100002121 is a deficient number, since it is larger than the sum of its proper divisors (1606087042999).

201001100002121 is a wasteful number, since it uses less digits than its factorization.

201001100002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336824.

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

Adding to 201001100002121 its reverse (121200001100102), we get a palindrome (322201101102223).

The spelling of 201001100002121 in words is "two hundred one trillion, one billion, one hundred million, two thousand, one hundred twenty-one".