20012102 has 16 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 9063720.

The previous prime is 20012101. The next prime is 20012119. The reversal of 20012102 is 20121002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5273 + ... + 8235.

It is an arithmetic number, because the mean of its divisors is an integer number (2054052).

Almost surely, 2^20012102 is an apocalyptic number.

20012102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012102 is a deficient number, since it is larger than the sum of its proper divisors (12852730).

20012102 is a wasteful number, since it uses less digits than its factorization.

20012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

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

The square root of 20012102 is about 4473.4887951128. The cubic root of 20012102 is about 271.4965004235.

Adding to 20012102 its reverse (20121002), we get a palindrome (40133104).

Subtracting 20012102 from its reverse (20121002), we obtain a square (108900 = 330²).

The spelling of 20012102 in words is "twenty million, twelve thousand, one hundred two".