1224280061 has 2 divisors, whose sum is σ = 1224280062. Its totient is φ = 1224280060.

The previous prime is 1224280021. The next prime is 1224280097. The reversal of 1224280061 is 1600824221.

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., 1045228900 + 179051161 = 32330^2 + 13381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224280061 - 2⁶ = 1224279997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224280061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224280021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612140030 + 612140031.

It is an arithmetic number, because the mean of its divisors is an integer number (612140031).

Almost surely, 2^1224280061 is an apocalyptic number.

It is an amenable number.

1224280061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224280061 is an equidigital number, since it uses as much as digits as its factorization.

1224280061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1224280061 is about 34989.7136455845. The cubic root of 1224280061 is about 1069.7778270483. Note that the first 3 decimals are identical.

The spelling of 1224280061 in words is "one billion, two hundred twenty-four million, two hundred eighty thousand, sixty-one".