20120102 has 16 divisors (see below), whose sum is σ = 30730752. Its totient is φ = 9878400.

The previous prime is 20120081. The next prime is 20120143. The reversal of 20120102 is 20102102.

It is a self number, because there is not a number n which added to its sum of digits gives 20120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28352 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (1920672).

Almost surely, 2^20120102 is an apocalyptic number.

20120102 is a deficient number, since it is larger than the sum of its proper divisors (10610650).

20120102 is a wasteful number, since it uses less digits than its factorization.

20120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

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

The square root of 20120102 is about 4485.5436682748. The cubic root of 20120102 is about 271.9840226342.

Adding to 20120102 its reverse (20102102), we get a palindrome (40222204).

The spelling of 20120102 in words is "twenty million, one hundred twenty thousand, one hundred two".