20100120112 has 40 divisors (see below), whose sum is σ = 39931006752. Its totient is φ = 9795801600.

The previous prime is 20100120077. The next prime is 20100120113. The reversal of 20100120112 is 21102100102.

It is not an unprimeable number, because it can be changed into a prime (20100120113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719037 + ... + 746467.

Almost surely, 2^20100120112 is an apocalyptic number.

It is an amenable number.

20100120112 is a deficient number, since it is larger than the sum of its proper divisors (19830886640).

20100120112 is a wasteful number, since it uses less digits than its factorization.

20100120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28597 (or 28591 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20100120112 its reverse (21102100102), we get a palindrome (41202220214).

The spelling of 20100120112 in words is "twenty billion, one hundred million, one hundred twenty thousand, one hundred twelve".