20012012011 has 2 divisors, whose sum is σ = 20012012012. Its totient is φ = 20012012010.

The previous prime is 20012011997. The next prime is 20012012039. The reversal of 20012012011 is 11021021002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012012011 - 2¹³ = 20012003819 is a prime.

It is a super-3 number, since 3×20012012011³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20012012051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006006005 + 10006006006.

It is an arithmetic number, because the mean of its divisors is an integer number (10006006006).

Almost surely, 2^20012012011 is an apocalyptic number.

20012012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012012011 is an equidigital number, since it uses as much as digits as its factorization.

20012012011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20012012011 its reverse (11021021002), we get a palindrome (31033033013).

The spelling of 20012012011 in words is "twenty billion, twelve million, twelve thousand, eleven".