1124221081 has 2 divisors, whose sum is σ = 1124221082. Its totient is φ = 1124221080.

The previous prime is 1124221009. The next prime is 1124221103. The reversal of 1124221081 is 1801224211.

It is an a-pointer prime, because the next prime (1124221103) can be obtained adding 1124221081 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., 878233225 + 245987856 = 29635^2 + 15684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124221081 - 2⁷ = 1124220953 is a prime.

It is a super-2 number, since 2×1124221081² = 2527746077929617122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1124222081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562110540 + 562110541.

It is an arithmetic number, because the mean of its divisors is an integer number (562110541).

Almost surely, 2^1124221081 is an apocalyptic number.

It is an amenable number.

1124221081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124221081 is an equidigital number, since it uses as much as digits as its factorization.

1124221081 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 1124221081 is about 33529.4062130542. The cubic root of 1124221081 is about 1039.8018239872.

Adding to 1124221081 its reverse (1801224211), we get a palindrome (2925445292).

It can be divided in two parts, 11242 and 21081, that added together give a palindrome (32323).

The spelling of 1124221081 in words is "one billion, one hundred twenty-four million, two hundred twenty-one thousand, eighty-one".