201100002121 has 8 divisors (see below), whose sum is σ = 202389036480. Its totient is φ = 199812807792.

The previous prime is 201100002107. The next prime is 201100002143. The reversal of 201100002121 is 121200001102.

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 201100002121 - 2²⁵ = 201066447689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201100002098 and 201100002107.

It is not an unprimeable number, because it can be changed into a prime (201100002101) 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, 240390 + ... + 678223.

It is an arithmetic number, because the mean of its divisors is an integer number (25298629560).

Almost surely, 2^201100002121 is an apocalyptic number.

It is an amenable number.

201100002121 is a deficient number, since it is larger than the sum of its proper divisors (1289034359).

201100002121 is a wasteful number, since it uses less digits than its factorization.

201100002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920015.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201100002121 its reverse (121200001102), we get a palindrome (322300003223).

The spelling of 201100002121 in words is "two hundred one billion, one hundred million, two thousand, one hundred twenty-one".