212100201002121 has 8 divisors (see below), whose sum is σ = 283765456632000. Its totient is φ = 140917539686832.

The previous prime is 212100201002093. The next prime is 212100201002167. The reversal of 212100201002121 is 121200102001212.

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

It is not a de Polignac number, because 212100201002121 - 2⁷ = 212100201001993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212100201002121.

It is not an unprimeable number, because it can be changed into a prime (212100201002171) 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, 120648577621 + ... + 120648579378.

It is an arithmetic number, because the mean of its divisors is an integer number (35470682079000).

Almost surely, 2^{212100201002121} is an apocalyptic number.

It is an amenable number.

212100201002121 is a deficient number, since it is larger than the sum of its proper divisors (71665255629879).

212100201002121 is a wasteful number, since it uses less digits than its factorization.

212100201002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241297157295.

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

Adding to 212100201002121 its reverse (121200102001212), we get a palindrome (333300303003333).

Subtracting from 212100201002121 its reverse (121200102001212), we obtain a palindrome (90900099000909).

The spelling of 212100201002121 in words is "two hundred twelve trillion, one hundred billion, two hundred one million, two thousand, one hundred twenty-one".