2103221333221 has 2 divisors, whose sum is σ = 2103221333222. Its totient is φ = 2103221333220.

The previous prime is 2103221333123. The next prime is 2103221333237. The reversal of 2103221333221 is 1223331223012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2068171876996 + 35049456225 = 1438114^2 + 187215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103221333221 - 2²⁵ = 2103187778789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103221373221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051610666610 + 1051610666611.

It is an arithmetic number, because the mean of its divisors is an integer number (1051610666611).

Almost surely, 2^{2103221333221} is an apocalyptic number.

It is an amenable number.

2103221333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103221333221 is an equidigital number, since it uses as much as digits as its factorization.

2103221333221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2103221333221 its reverse (1223331223012), we get a palindrome (3326552556233).

The spelling of 2103221333221 in words is "two trillion, one hundred three billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty-one".