10001120120 has 16 divisors (see below), whose sum is σ = 22502520360. Its totient is φ = 4000448032.

The previous prime is 10001120081. The next prime is 10001120131. The reversal of 10001120120 is 2102110001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 10001120098 and 10001120107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125013962 + ... + 125014041.

Almost surely, 2^10001120120 is an apocalyptic number.

10001120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001120120 is an abundant number, since it is smaller than the sum of its proper divisors (12501400240).

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

10001120120 is a wasteful number, since it uses less digits than its factorization.

10001120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250028014 (or 250028010 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10001120120 its reverse (2102110001), we get a palindrome (12103230121).

The spelling of 10001120120 in words is "ten billion, one million, one hundred twenty thousand, one hundred twenty".