2122660302221 has 4 divisors (see below), whose sum is σ = 2123081553600. Its totient is φ = 2122239050844.

The previous prime is 2122660302199. The next prime is 2122660302233. The reversal of 2122660302221 is 1222030662212.

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 2122660302221 - 2³⁰ = 2121586560397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122660302271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210618131 + ... + 210628208.

It is an arithmetic number, because the mean of its divisors is an integer number (530770388400).

Almost surely, 2^{2122660302221} is an apocalyptic number.

It is an amenable number.

2122660302221 is a deficient number, since it is larger than the sum of its proper divisors (421251379).

2122660302221 is an equidigital number, since it uses as much as digits as its factorization.

2122660302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421251378.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 2122660302221 its reverse (1222030662212), we get a palindrome (3344690964433).

The spelling of 2122660302221 in words is "two trillion, one hundred twenty-two billion, six hundred sixty million, three hundred two thousand, two hundred twenty-one".