20011212000111 has 16 divisors (see below), whose sum is σ = 27842988176640. Its totient is φ = 12760176158400.

The previous prime is 20011212000037. The next prime is 20011212000121. The reversal of 20011212000111 is 11100021211002.

It is a de Polignac number, because none of the positive numbers 2^k-20011212000111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011212000121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5292190 + ... + 8248011.

It is an arithmetic number, because the mean of its divisors is an integer number (1740186761040).

Almost surely, 2^{20011212000111} is an apocalyptic number.

20011212000111 is a deficient number, since it is larger than the sum of its proper divisors (7831776176529).

20011212000111 is a wasteful number, since it uses less digits than its factorization.

20011212000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561646.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011212000111 its reverse (11100021211002), we get a palindrome (31111233211113).

The spelling of 20011212000111 in words is "twenty trillion, eleven billion, two hundred twelve million, one hundred eleven", and thus it is an aban number.