3000121212221 has 4 divisors (see below), whose sum is σ = 3428709956832. Its totient is φ = 2571532467612.

The previous prime is 3000121212191. The next prime is 3000121212229. The reversal of 3000121212221 is 1222121210003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3000121212221 - 2⁶ = 3000121212157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3000121212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000121212229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214294372295 + ... + 214294372308.

It is an arithmetic number, because the mean of its divisors is an integer number (857177489208).

Almost surely, 2^{3000121212221} is an apocalyptic number.

It is an amenable number.

3000121212221 is a deficient number, since it is larger than the sum of its proper divisors (428588744611).

3000121212221 is an equidigital number, since it uses as much as digits as its factorization.

3000121212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428588744610.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 3000121212221 its reverse (1222121210003), we get a palindrome (4222242422224).

The spelling of 3000121212221 in words is "three trillion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-one".