212121002200121 has 8 divisors (see below), whose sum is σ = 242545275168000. Its totient is φ = 181727047395648.

The previous prime is 212121002200103. The next prime is 212121002200123. The reversal of 212121002200121 is 121002200121212.

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 212121002200121 - 2¹⁰ = 212121002199097 is a prime.

It is a super-3 number, since 3×212121002200121³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212121002200121.

It is not an unprimeable number, because it can be changed into a prime (212121002200123) 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, 7579525856 + ... + 7579553841.

It is an arithmetic number, because the mean of its divisors is an integer number (30318159396000).

Almost surely, 2^{212121002200121} is an apocalyptic number.

It is an amenable number.

212121002200121 is a deficient number, since it is larger than the sum of its proper divisors (30424272967879).

212121002200121 is a wasteful number, since it uses less digits than its factorization.

212121002200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15159081703.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212121002200121 its reverse (121002200121212), we get a palindrome (333123202321333).

It can be divided in two parts, 212 and 121002200121, that multiplied together give a palindrome (25652466425652).

The spelling of 212121002200121 in words is "two hundred twelve trillion, one hundred twenty-one billion, two million, two hundred thousand, one hundred twenty-one".