20011101011112 has 32 divisors (see below), whose sum is σ = 50027941900800. Its totient is φ = 6670341753984.

The previous prime is 20011101011107. The next prime is 20011101011137. The reversal of 20011101011112 is 21111010111002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5551564 + ... + 8416772.

It is an arithmetic number, because the mean of its divisors is an integer number (1563373184400).

Almost surely, 2^{20011101011112} is an apocalyptic number.

It is an amenable number.

20011101011112 is an abundant number, since it is smaller than the sum of its proper divisors (30016840889688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011101011112 is a wasteful number, since it uses less digits than its factorization.

20011101011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156225 (or 3156221 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20011101011112 its reverse (21111010111002), we get a palindrome (41122111122114).

The spelling of 20011101011112 in words is "twenty trillion, eleven billion, one hundred one million, eleven thousand, one hundred twelve".