1120242181 has 2 divisors, whose sum is σ = 1120242182. Its totient is φ = 1120242180.

The previous prime is 1120242127. The next prime is 1120242203. The reversal of 1120242181 is 1812420211.

It is an a-pointer prime, because the next prime (1120242203) can be obtained adding 1120242181 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803722500 + 316519681 = 28350^2 + 17791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120242181 - 2²⁷ = 986024453 is a prime.

It is a super-2 number, since 2×1120242181² = 2509885088183273522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120242121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560121090 + 560121091.

It is an arithmetic number, because the mean of its divisors is an integer number (560121091).

Almost surely, 2^1120242181 is an apocalyptic number.

It is an amenable number.

1120242181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120242181 is an equidigital number, since it uses as much as digits as its factorization.

1120242181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1120242181 is about 33470.0191365347. The cubic root of 1120242181 is about 1038.5736675598.

Adding to 1120242181 its reverse (1812420211), we get a palindrome (2932662392).

The spelling of 1120242181 in words is "one billion, one hundred twenty million, two hundred forty-two thousand, one hundred eighty-one".