100012012120 has 16 divisors (see below), whose sum is σ = 225027027360. Its totient is φ = 40004804832.

The previous prime is 100012012043. The next prime is 100012012157. The reversal of 100012012120 is 21210210001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100012012097 and 100012012106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250150112 + ... + 1250150191.

It is an arithmetic number, because the mean of its divisors is an integer number (14064189210).

Almost surely, 2^100012012120 is an apocalyptic number.

100012012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012012120 is an abundant number, since it is smaller than the sum of its proper divisors (125015015240).

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

100012012120 is a wasteful number, since it uses less digits than its factorization.

100012012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500300314 (or 2500300310 counting only the distinct ones).

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

Adding to 100012012120 its reverse (21210210001), we get a palindrome (121222222121).

The spelling of 100012012120 in words is "one hundred billion, twelve million, twelve thousand, one hundred twenty".