20111030112 has 24 divisors (see below), whose sum is σ = 52791454296. Its totient is φ = 6703676672.

The previous prime is 20111030087. The next prime is 20111030123. The reversal of 20111030112 is 21103011102.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×20111030112³ (a number of 32 digits) contains 333 as substring.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104744853 + ... + 104745044.

It is an arithmetic number, because the mean of its divisors is an integer number (2199643929).

Almost surely, 2^20111030112 is an apocalyptic number.

It is an amenable number.

20111030112 is an abundant number, since it is smaller than the sum of its proper divisors (32680424184).

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

20111030112 is a wasteful number, since it uses less digits than its factorization.

20111030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209489910 (or 209489902 counting only the distinct ones).

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

Adding to 20111030112 its reverse (21103011102), we get a palindrome (41214041214).

The spelling of 20111030112 in words is "twenty billion, one hundred eleven million, thirty thousand, one hundred twelve".