1228213061 has 2 divisors, whose sum is σ = 1228213062. Its totient is φ = 1228213060.

The previous prime is 1228213037. The next prime is 1228213081. The reversal of 1228213061 is 1603128221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1202008900 + 26204161 = 34670^2 + 5119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228213061 - 2³⁰ = 154471237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228213061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228213081) 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, 614106530 + 614106531.

It is an arithmetic number, because the mean of its divisors is an integer number (614106531).

Almost surely, 2^1228213061 is an apocalyptic number.

It is an amenable number.

1228213061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228213061 is an equidigital number, since it uses as much as digits as its factorization.

1228213061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1228213061 is about 35045.8708124081. The cubic root of 1228213061 is about 1070.9221563806.

The spelling of 1228213061 in words is "one billion, two hundred twenty-eight million, two hundred thirteen thousand, sixty-one".