20102112112 has 10 divisors (see below), whose sum is σ = 38947842248. Its totient is φ = 10051056048.

The previous prime is 20102112109. The next prime is 20102112131. The reversal of 20102112112 is 21121120102.

It is a super-2 number, since 2×20102112112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20102112092 and 20102112101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628190988 + ... + 628191019.

Almost surely, 2^20102112112 is an apocalyptic number.

It is an amenable number.

20102112112 is a deficient number, since it is larger than the sum of its proper divisors (18845730136).

20102112112 is a wasteful number, since it uses less digits than its factorization.

20102112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256382015 (or 1256382009 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20102112112 its reverse (21121120102), we get a palindrome (41223232214).

The spelling of 20102112112 in words is "twenty billion, one hundred two million, one hundred twelve thousand, one hundred twelve".