201021000002121 has 8 divisors (see below), whose sum is σ = 288645538464640. Its totient is φ = 123705230770512.

The previous prime is 201021000002107. The next prime is 201021000002143. The reversal of 201021000002121 is 121200000120102.

201021000002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201021000002121 - 2⁶ = 201021000002057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021000002097 and 201021000002106.

It is not an unprimeable number, because it can be changed into a prime (201021000002191) 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, 2577192307681 + ... + 2577192307758.

It is an arithmetic number, because the mean of its divisors is an integer number (36080692308080).

Almost surely, 2^{201021000002121} is an apocalyptic number.

It is an amenable number.

201021000002121 is a deficient number, since it is larger than the sum of its proper divisors (87624538462519).

201021000002121 is a wasteful number, since it uses less digits than its factorization.

201021000002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154384615455.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021000002121 its reverse (121200000120102), we get a palindrome (322221000122223).

The spelling of 201021000002121 in words is "two hundred one trillion, twenty-one billion, two thousand, one hundred twenty-one".