1012200139 has 2 divisors, whose sum is σ = 1012200140. Its totient is φ = 1012200138.

The previous prime is 1012200121. The next prime is 1012200143. The reversal of 1012200139 is 9310022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012200139 - 2⁹ = 1012199627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012200109) 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, 506100069 + 506100070.

It is an arithmetic number, because the mean of its divisors is an integer number (506100070).

Almost surely, 2^1012200139 is an apocalyptic number.

1012200139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012200139 is an equidigital number, since it uses as much as digits as its factorization.

1012200139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1012200139 is about 31815.0929434443. The cubic root of 1012200139 is about 1004.0502860350.

The spelling of 1012200139 in words is "one billion, twelve million, two hundred thousand, one hundred thirty-nine".