1230002222161 has 2 divisors, whose sum is σ = 1230002222162. Its totient is φ = 1230002222160.

The previous prime is 1230002222093. The next prime is 1230002222167. The reversal of 1230002222161 is 1612222000321.

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., 619635034561 + 610367187600 = 787169^2 + 781260^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230002222161 - 2²³ = 1229993833553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230002222167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615001111080 + 615001111081.

It is an arithmetic number, because the mean of its divisors is an integer number (615001111081).

Almost surely, 2^{1230002222161} is an apocalyptic number.

It is an amenable number.

1230002222161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230002222161 is an equidigital number, since it uses as much as digits as its factorization.

1230002222161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1230002222161 its reverse (1612222000321), we get a palindrome (2842224222482).

The spelling of 1230002222161 in words is "one trillion, two hundred thirty billion, two million, two hundred twenty-two thousand, one hundred sixty-one".