1122146161 has 4 divisors (see below), whose sum is σ = 1132076772. Its totient is φ = 1112215552.

The previous prime is 1122146159. The next prime is 1122146177. The reversal of 1122146161 is 1616412211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1616412211 = 1567 ⋅1031533.

It can be written as a sum of positive squares in 2 ways, for example, as 363474225 + 758671936 = 19065^2 + 27544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122146161 - 2¹ = 1122146159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122146191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4965136 + ... + 4965361.

It is an arithmetic number, because the mean of its divisors is an integer number (283019193).

Almost surely, 2^1122146161 is an apocalyptic number.

It is an amenable number.

1122146161 is a deficient number, since it is larger than the sum of its proper divisors (9930611).

1122146161 is an equidigital number, since it uses as much as digits as its factorization.

1122146161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930610.

The product of its digits is 576, while the sum is 25.

The square root of 1122146161 is about 33498.4501283268. The cubic root of 1122146161 is about 1039.1617261945.

Adding to 1122146161 its reverse (1616412211), we get a palindrome (2738558372).

The spelling of 1122146161 in words is "one billion, one hundred twenty-two million, one hundred forty-six thousand, one hundred sixty-one".