1012020210139 has 2 divisors, whose sum is σ = 1012020210140. Its totient is φ = 1012020210138.

The previous prime is 1012020210137. The next prime is 1012020210199. The reversal of 1012020210139 is 9310120202101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012020210139 - 2¹ = 1012020210137 is a prime.

Together with 1012020210137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1012020210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506010105069 + 506010105070.

It is an arithmetic number, because the mean of its divisors is an integer number (506010105070).

Almost surely, 2^{1012020210139} is an apocalyptic number.

1012020210139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012020210139 is an equidigital number, since it uses as much as digits as its factorization.

1012020210139 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 1012020210139 in words is "one trillion, twelve billion, twenty million, two hundred ten thousand, one hundred thirty-nine".