1111222120189 has 2 divisors, whose sum is σ = 1111222120190. Its totient is φ = 1111222120188.

The previous prime is 1111222120171. The next prime is 1111222120199. The reversal of 1111222120189 is 9810212221111.

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., 1023921372100 + 87300748089 = 1011890^2 + 295467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111222120189 - 2⁷ = 1111222120061 is a prime.

It is a super-2 number, since 2×1111222120189² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111222120189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111222120199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555611060094 + 555611060095.

It is an arithmetic number, because the mean of its divisors is an integer number (555611060095).

Almost surely, 2^{1111222120189} is an apocalyptic number.

It is an amenable number.

1111222120189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111222120189 is an equidigital number, since it uses as much as digits as its factorization.

1111222120189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 31.

The spelling of 1111222120189 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, one hundred eighty-nine".