1122220189 has 2 divisors, whose sum is σ = 1122220190. Its totient is φ = 1122220188.

The previous prime is 1122220159. The next prime is 1122220193. The reversal of 1122220189 is 9810222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990360900 + 131859289 = 31470^2 + 11483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122220189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122220139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561110094 + 561110095.

It is an arithmetic number, because the mean of its divisors is an integer number (561110095).

Almost surely, 2^1122220189 is an apocalyptic number.

It is an amenable number.

1122220189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122220189 is an equidigital number, since it uses as much as digits as its factorization.

1122220189 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 28.

The square root of 1122220189 is about 33499.5550567466. Note that the first 3 decimals coincide. The cubic root of 1122220189 is about 1039.1845768638.

The spelling of 1122220189 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred eighty-nine".