2122120330221 has 4 divisors (see below), whose sum is σ = 2829493773632. Its totient is φ = 1414746886812.

The previous prime is 2122120330217. The next prime is 2122120330229. The reversal of 2122120330221 is 1220330212212.

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 not a de Polignac number, because 2122120330221 - 2² = 2122120330217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122120330229) 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, 353686721701 + ... + 353686721706.

It is an arithmetic number, because the mean of its divisors is an integer number (707373443408).

Almost surely, 2^{2122120330221} is an apocalyptic number.

It is an amenable number.

2122120330221 is a deficient number, since it is larger than the sum of its proper divisors (707373443411).

2122120330221 is an equidigital number, since it uses as much as digits as its factorization.

2122120330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707373443410.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2122120330221 its reverse (1220330212212), we get a palindrome (3342450542433).

The spelling of 2122120330221 in words is "two trillion, one hundred twenty-two billion, one hundred twenty million, three hundred thirty thousand, two hundred twenty-one".