102001120120 has 16 divisors (see below), whose sum is σ = 229502520360. Its totient is φ = 40800448032.

The previous prime is 102001120093. The next prime is 102001120129. The reversal of 102001120120 is 21021100201.

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 = 102001120097 and 102001120106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001120129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275013962 + ... + 1275014041.

Almost surely, 2^102001120120 is an apocalyptic number.

102001120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001120120 is an abundant number, since it is smaller than the sum of its proper divisors (127501400240).

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

102001120120 is a wasteful number, since it uses less digits than its factorization.

102001120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550028014 (or 2550028010 counting only the distinct ones).

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

Adding to 102001120120 its reverse (21021100201), we get a palindrome (123022220321).

The spelling of 102001120120 in words is "one hundred two billion, one million, one hundred twenty thousand, one hundred twenty".