110421161 has 2 divisors, whose sum is σ = 110421162. Its totient is φ = 110421160.

The previous prime is 110421127. The next prime is 110421167. The reversal of 110421161 is 161124011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56911936 + 53509225 = 7544^2 + 7315^2 .

It is a cyclic number.

It is not a de Polignac number, because 110421161 - 2⁶ = 110421097 is a prime.

It is not a weakly prime, because it can be changed into another prime (110421167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55210580 + 55210581.

It is an arithmetic number, because the mean of its divisors is an integer number (55210581).

Almost surely, 2^110421161 is an apocalyptic number.

It is an amenable number.

110421161 is a deficient number, since it is larger than the sum of its proper divisors (1).

110421161 is an equidigital number, since it uses as much as digits as its factorization.

110421161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 110421161 is about 10508.1473628799. The cubic root of 110421161 is about 479.7527097158.

Adding to 110421161 its reverse (161124011), we get a palindrome (271545172).

The spelling of 110421161 in words is "one hundred ten million, four hundred twenty-one thousand, one hundred sixty-one".