2001220110139 has 2 divisors, whose sum is σ = 2001220110140. Its totient is φ = 2001220110138.

The previous prime is 2001220110101. The next prime is 2001220110193. The reversal of 2001220110139 is 9310110221002.

Together with next prime (2001220110193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001220110139 - 2⁷ = 2001220110011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001220116139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610055069 + 1000610055070.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610055070).

Almost surely, 2^{2001220110139} is an apocalyptic number.

2001220110139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001220110139 is an equidigital number, since it uses as much as digits as its factorization.

2001220110139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 2001220110139 in words is "two trillion, one billion, two hundred twenty million, one hundred ten thousand, one hundred thirty-nine".