100001200120 has 16 divisors (see below), whose sum is σ = 225002700360. Its totient is φ = 40000480032.

The previous prime is 100001200109. The next prime is 100001200133. The reversal of 100001200120 is 21002100001.

100001200120 is a modest number, since divided by 1200120 gives 1000 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250014962 + ... + 1250015041.

Almost surely, 2^100001200120 is an apocalyptic number.

100001200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001200120 is an abundant number, since it is smaller than the sum of its proper divisors (125001500240).

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

100001200120 is a wasteful number, since it uses less digits than its factorization.

100001200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500030014 (or 2500030010 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100001200120 its reverse (21002100001), we get a palindrome (121003300121).

The spelling of 100001200120 in words is "one hundred billion, one million, two hundred thousand, one hundred twenty".