1111200122321 has 2 divisors, whose sum is σ = 1111200122322. Its totient is φ = 1111200122320.

The previous prime is 1111200122311. The next prime is 1111200122341. The reversal of 1111200122321 is 1232210021111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111050916096 + 149206225 = 1054064^2 + 12215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111200122321 - 2¹⁴ = 1111200105937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111200122321.

It is not a weakly prime, because it can be changed into another prime (1111200122311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555600061160 + 555600061161.

It is an arithmetic number, because the mean of its divisors is an integer number (555600061161).

Almost surely, 2^{1111200122321} is an apocalyptic number.

It is an amenable number.

1111200122321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111200122321 is an equidigital number, since it uses as much as digits as its factorization.

1111200122321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1111200122321 its reverse (1232210021111), we get a palindrome (2343410143432).

The spelling of 1111200122321 in words is "one trillion, one hundred eleven billion, two hundred million, one hundred twenty-two thousand, three hundred twenty-one".