1121333333221 has 2 divisors, whose sum is σ = 1121333333222. Its totient is φ = 1121333333220.

The previous prime is 1121333333177. The next prime is 1121333333231. The reversal of 1121333333221 is 1223333331211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050676250625 + 70657082596 = 1025025^2 + 265814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121333333221 - 2³⁹ = 571577519333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121333333221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121333333231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560666666610 + 560666666611.

It is an arithmetic number, because the mean of its divisors is an integer number (560666666611).

Almost surely, 2^{1121333333221} is an apocalyptic number.

It is an amenable number.

1121333333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121333333221 is an equidigital number, since it uses as much as digits as its factorization.

1121333333221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 28.

Adding to 1121333333221 its reverse (1223333331211), we get a palindrome (2344666664432).

The spelling of 1121333333221 in words is "one trillion, one hundred twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, two hundred twenty-one".