1002220129 has 2 divisors, whose sum is σ = 1002220130. Its totient is φ = 1002220128.

The previous prime is 1002220117. The next prime is 1002220133. The reversal of 1002220129 is 9210222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 928603729 + 73616400 = 30473^2 + 8580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002220129 - 2⁵ = 1002220097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002220169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110064 + 501110065.

It is an arithmetic number, because the mean of its divisors is an integer number (501110065).

Almost surely, 2^1002220129 is an apocalyptic number.

It is an amenable number.

1002220129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002220129 is an equidigital number, since it uses as much as digits as its factorization.

1002220129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1002220129 is about 31657.8604615031. The cubic root of 1002220129 is about 1000.7394960109.

The spelling of 1002220129 in words is "one billion, two million, two hundred twenty thousand, one hundred twenty-nine".