1121121200189 has 2 divisors, whose sum is σ = 1121121200190. Its totient is φ = 1121121200188.

The previous prime is 1121121200131. The next prime is 1121121200201. The reversal of 1121121200189 is 9810021211211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762748956025 + 358372244164 = 873355^2 + 598642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121121200189 - 2¹² = 1121121196093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121121200389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560600094 + 560560600095.

It is an arithmetic number, because the mean of its divisors is an integer number (560560600095).

Almost surely, 2^{1121121200189} is an apocalyptic number.

It is an amenable number.

1121121200189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121121200189 is an equidigital number, since it uses as much as digits as its factorization.

1121121200189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 1121121200189 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, one hundred eighty-nine".