12100020028 has 12 divisors (see below), whose sum is σ = 22420625472. Its totient is φ = 5694127040.

The previous prime is 12100019947. The next prime is 12100020029. The reversal of 12100020028 is 82002000121.

It is a super-2 number, since 2×12100020028² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12100019993 and 12100020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88970668 + ... + 88970803.

It is an arithmetic number, because the mean of its divisors is an integer number (1868385456).

Almost surely, 2^12100020028 is an apocalyptic number.

It is an amenable number.

12100020028 is a deficient number, since it is larger than the sum of its proper divisors (10320605444).

12100020028 is a wasteful number, since it uses less digits than its factorization.

12100020028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177941492 (or 177941490 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12100020028 its reverse (82002000121), we get a palindrome (94102020149).

The spelling of 12100020028 in words is "twelve billion, one hundred million, twenty thousand, twenty-eight".