20011011202139 has 2 divisors, whose sum is σ = 20011011202140. Its totient is φ = 20011011202138.

The previous prime is 20011011202111. The next prime is 20011011202201. The reversal of 20011011202139 is 93120211011002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011011202139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011011202739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005505601069 + 10005505601070.

It is an arithmetic number, because the mean of its divisors is an integer number (10005505601070).

Almost surely, 2^{20011011202139} is an apocalyptic number.

20011011202139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011011202139 is an equidigital number, since it uses as much as digits as its factorization.

20011011202139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 20011011202139 in words is "twenty trillion, eleven billion, eleven million, two hundred two thousand, one hundred thirty-nine".