20111002112 has 20 divisors (see below), whose sum is σ = 40182725946. Its totient is φ = 10055500800.

The previous prime is 20111002097. The next prime is 20111002117. The reversal of 20111002112 is 21120011102.

It can be written as a sum of positive squares in only one way, i.e., 17167288576 + 2943713536 = 131024^2 + 54256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20111002093 and 20111002102.

It is not an unprimeable number, because it can be changed into a prime (20111002117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19639139 + ... + 19640162.

Almost surely, 2^20111002112 is an apocalyptic number.

It is an amenable number.

20111002112 is a deficient number, since it is larger than the sum of its proper divisors (20071723834).

20111002112 is an frugal number, since it uses more digits than its factorization.

20111002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39279319 (or 39279303 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111002112 its reverse (21120011102), we get a palindrome (41231013214).

The spelling of 20111002112 in words is "twenty billion, one hundred eleven million, two thousand, one hundred twelve".