20001011002139 has 2 divisors, whose sum is σ = 20001011002140. Its totient is φ = 20001011002138.

The previous prime is 20001011002111. The next prime is 20001011002241. The reversal of 20001011002139 is 93120011010002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001011002139 - 2³² = 19996716034843 is a prime.

It is a super-2 number, since 2×20001011002139² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20001011002139.

It is not a weakly prime, because it can be changed into another prime (20001011002939) 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, 10000505501069 + 10000505501070.

It is an arithmetic number, because the mean of its divisors is an integer number (10000505501070).

Almost surely, 2^{20001011002139} is an apocalyptic number.

20001011002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001011002139 is an equidigital number, since it uses as much as digits as its factorization.

20001011002139 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 20.

The spelling of 20001011002139 in words is "twenty trillion, one billion, eleven million, two thousand, one hundred thirty-nine".