20012102011 has 8 divisors (see below), whose sum is σ = 21832559424. Its totient is φ = 18191840520.

The previous prime is 20012101999. The next prime is 20012102017. The reversal of 20012102011 is 11020121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012102011 - 2⁵ = 20012101979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012102017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237456 + ... + 310498.

It is an arithmetic number, because the mean of its divisors is an integer number (2729069928).

Almost surely, 2^20012102011 is an apocalyptic number.

20012102011 is a deficient number, since it is larger than the sum of its proper divisors (1820457413).

20012102011 is a wasteful number, since it uses less digits than its factorization.

20012102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97961.

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

Adding to 20012102011 its reverse (11020121002), we get a palindrome (31032223013).

It can be divided in two parts, 2001 and 2102011, that added together give a palindrome (2104012).

The spelling of 20012102011 in words is "twenty billion, twelve million, one hundred two thousand, eleven".