20111443112 has 8 divisors (see below), whose sum is σ = 37708955850. Its totient is φ = 10055721552.

The previous prime is 20111443067. The next prime is 20111443153. The reversal of 20111443112 is 21134411102.

It can be written as a sum of positive squares in only one way, i.e., 10313214916 + 9798228196 = 101554^2 + 98986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256965187 + ... + 1256965202.

Almost surely, 2^20111443112 is an apocalyptic number.

It is an amenable number.

20111443112 is a deficient number, since it is larger than the sum of its proper divisors (17597512738).

20111443112 is a wasteful number, since it uses less digits than its factorization.

20111443112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513930395 (or 2513930391 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20111443112 its reverse (21134411102), we get a palindrome (41245854214).

The spelling of 20111443112 in words is "twenty billion, one hundred eleven million, four hundred forty-three thousand, one hundred twelve".