1121200211321 has 4 divisors (see below), whose sum is σ = 1127681137572. Its totient is φ = 1114719285072.

The previous prime is 1121200211311. The next prime is 1121200211347. The reversal of 1121200211321 is 1231120021211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 976371253225 + 144828958096 = 988115^2 + 380564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121200211321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121200211321.

It is not an unprimeable number, because it can be changed into a prime (1121200211311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240462866 + ... + 3240463211.

It is an arithmetic number, because the mean of its divisors is an integer number (281920284393).

Almost surely, 2^{1121200211321} is an apocalyptic number.

It is an amenable number.

1121200211321 is a deficient number, since it is larger than the sum of its proper divisors (6480926251).

1121200211321 is an equidigital number, since it uses as much as digits as its factorization.

1121200211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480926250.

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

Adding to 1121200211321 its reverse (1231120021211), we get a palindrome (2352320232532).

The spelling of 1121200211321 in words is "one trillion, one hundred twenty-one billion, two hundred million, two hundred eleven thousand, three hundred twenty-one".