2112155189 has 2 divisors, whose sum is σ = 2112155190. Its totient is φ = 2112155188.

The previous prime is 2112155153. The next prime is 2112155257. The reversal of 2112155189 is 9815512112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643086225 + 469068964 = 40535^2 + 21658^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112155189 - 2¹⁶ = 2112089653 is a prime.

It is a super-2 number, since 2×2112155189² = 8922399084839251442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112155119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056077594 + 1056077595.

It is an arithmetic number, because the mean of its divisors is an integer number (1056077595).

Almost surely, 2^2112155189 is an apocalyptic number.

It is an amenable number.

2112155189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112155189 is an equidigital number, since it uses as much as digits as its factorization.

2112155189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 35.

The square root of 2112155189 is about 45958.1895748734. The cubic root of 2112155189 is about 1283.0451563578.

The spelling of 2112155189 in words is "two billion, one hundred twelve million, one hundred fifty-five thousand, one hundred eighty-nine".