1122090161 has 2 divisors, whose sum is σ = 1122090162. Its totient is φ = 1122090160.

The previous prime is 1122090131. The next prime is 1122090187. The reversal of 1122090161 is 1610902211.

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., 971880625 + 150209536 = 31175^2 + 12256^2 .

It is an emirp because it is prime and its reverse (1610902211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122090161 - 2⁶ = 1122090097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122090131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561045080 + 561045081.

It is an arithmetic number, because the mean of its divisors is an integer number (561045081).

Almost surely, 2^1122090161 is an apocalyptic number.

It is an amenable number.

1122090161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122090161 is an equidigital number, since it uses as much as digits as its factorization.

1122090161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1122090161 is about 33497.6142583319. The cubic root of 1122090161 is about 1039.1444396689.

Adding to 1122090161 its reverse (1610902211), we get a palindrome (2732992372).

The spelling of 1122090161 in words is "one billion, one hundred twenty-two million, ninety thousand, one hundred sixty-one".