120102012 has 18 divisors (see below), whose sum is σ = 303591288. Its totient is φ = 40033992.

The previous prime is 120102001. The next prime is 120102013. The reversal of 120102012 is 210201021.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 120101985 and 120102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1668048 + ... + 1668119.

Almost surely, 2^120102012 is an apocalyptic number.

120102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120102012 is an abundant number, since it is smaller than the sum of its proper divisors (183489276).

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

120102012 is a wasteful number, since it uses less digits than its factorization.

120102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336177 (or 3336172 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 120102012 is about 10959.1063504284. The cubic root of 120102012 is about 493.3821437380.

Adding to 120102012 its reverse (210201021), we get a palindrome (330303033).

Subtracting 120102012 from its reverse (210201021), we obtain a palindrome (90099009).

The spelling of 120102012 in words is "one hundred twenty million, one hundred two thousand, twelve".