1121211001189 has 2 divisors, whose sum is σ = 1121211001190. Its totient is φ = 1121211001188.

The previous prime is 1121211001171. The next prime is 1121211001217. The reversal of 1121211001189 is 9811001121211.

It is an a-pointer prime, because the next prime (1121211001217) can be obtained adding 1121211001189 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685567440100 + 435643561089 = 827990^2 + 660033^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121211001189 - 2⁹ = 1121211000677 is a prime.

It is a super-2 number, since 2×1121211001189² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121211101189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605500594 + 560605500595.

It is an arithmetic number, because the mean of its divisors is an integer number (560605500595).

Almost surely, 2^{1121211001189} is an apocalyptic number.

It is an amenable number.

1121211001189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121211001189 is an equidigital number, since it uses as much as digits as its factorization.

1121211001189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 28.

The spelling of 1121211001189 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one thousand, one hundred eighty-nine".