120112100001 has 48 divisors (see below), whose sum is σ = 184094530048. Its totient is φ = 75330777600.

The previous prime is 120112099997. The next prime is 120112100041. The reversal of 120112100001 is 100001211021.

It is a happy number.

It is not a de Polignac number, because 120112100001 - 2² = 120112099997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120112100041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13384446 + ... + 13393416.

Almost surely, 2^120112100001 is an apocalyptic number.

It is an amenable number.

120112100001 is a deficient number, since it is larger than the sum of its proper divisors (63982430047).

120112100001 is a wasteful number, since it uses less digits than its factorization.

120112100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10342 (or 10339 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120112100001 its reverse (100001211021), we get a palindrome (220113311022).

The spelling of 120112100001 in words is "one hundred twenty billion, one hundred twelve million, one hundred thousand, one".