3001221232121 has 4 divisors (see below), whose sum is σ = 3429967122432. Its totient is φ = 2572475341812.

The previous prime is 3001221232073. The next prime is 3001221232147. The reversal of 3001221232121 is 1212321221003.

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 a de Polignac number, because none of the positive numbers 2^k-3001221232121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3001221232093 and 3001221232102.

It is not an unprimeable number, because it can be changed into a prime (3001221232151) 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, 214372945145 + ... + 214372945158.

It is an arithmetic number, because the mean of its divisors is an integer number (857491780608).

Almost surely, 2^{3001221232121} is an apocalyptic number.

It is an amenable number.

3001221232121 is a deficient number, since it is larger than the sum of its proper divisors (428745890311).

3001221232121 is an equidigital number, since it uses as much as digits as its factorization.

3001221232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428745890310.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3001221232121 its reverse (1212321221003), we get a palindrome (4213542453124).

The spelling of 3001221232121 in words is "three trillion, one billion, two hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-one".