20001012011011 has 2 divisors, whose sum is σ = 20001012011012. Its totient is φ = 20001012011010.

The previous prime is 20001012010997. The next prime is 20001012011027. The reversal of 20001012011011 is 11011021010002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001012011011 - 2¹³ = 20001012002819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001012011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000506005505 + 10000506005506.

It is an arithmetic number, because the mean of its divisors is an integer number (10000506005506).

Almost surely, 2^{20001012011011} is an apocalyptic number.

20001012011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001012011011 is an equidigital number, since it uses as much as digits as its factorization.

20001012011011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20001012011011 its reverse (11011021010002), we get a palindrome (31012033021013).

The spelling of 20001012011011 in words is "twenty trillion, one billion, twelve million, eleven thousand, eleven".