20111201112 has 64 divisors (see below), whose sum is σ = 52735633920. Its totient is φ = 6383760768.

The previous prime is 20111201107. The next prime is 20111201129. The reversal of 20111201112 is 21110211102.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 199198 + ... + 282669.

It is an arithmetic number, because the mean of its divisors is an integer number (823994280).

Almost surely, 2^20111201112 is an apocalyptic number.

It is an amenable number.

20111201112 is an abundant number, since it is smaller than the sum of its proper divisors (32624432808).

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

20111201112 is a wasteful number, since it uses less digits than its factorization.

20111201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481960 (or 481956 counting only the distinct ones).

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

Adding to 20111201112 its reverse (21110211102), we get a palindrome (41221412214).

The spelling of 20111201112 in words is "twenty billion, one hundred eleven million, two hundred one thousand, one hundred twelve".