20010020020111 has 24 divisors (see below), whose sum is σ = 23192217275760. Its totient is φ = 17118284313600.

The previous prime is 20010020020079. The next prime is 20010020020129. The reversal of 20010020020111 is 11102002001002.

It is not a de Polignac number, because 20010020020111 - 2⁵ = 20010020020079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010020020181) 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 in 23 ways as a sum of consecutive naturals, for example, 20702835 + ... + 21647803.

It is an arithmetic number, because the mean of its divisors is an integer number (966342386490).

Almost surely, 2^{20010020020111} is an apocalyptic number.

20010020020111 is a deficient number, since it is larger than the sum of its proper divisors (3182197255649).

20010020020111 is a wasteful number, since it uses less digits than its factorization.

20010020020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951675 (or 951658 counting only the distinct ones).

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

Adding to 20010020020111 its reverse (11102002001002), we get a palindrome (31112022021113).

The spelling of 20010020020111 in words is "twenty trillion, ten billion, twenty million, twenty thousand, one hundred eleven".