12100001022 has 32 divisors (see below), whose sum is σ = 28470592800. Its totient is φ = 3796078464.

The previous prime is 12100000987. The next prime is 12100001029. The reversal of 12100001022 is 22010000121.

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 = 12100000995 and 12100001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100001029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6589497 + ... + 6591332.

It is an arithmetic number, because the mean of its divisors is an integer number (889706025).

Almost surely, 2^12100001022 is an apocalyptic number.

12100001022 is an abundant number, since it is smaller than the sum of its proper divisors (16370591778).

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

12100001022 is a wasteful number, since it uses less digits than its factorization.

12100001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13180857 (or 13180851 counting only the distinct ones).

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

Adding to 12100001022 its reverse (22010000121), we get a palindrome (34110001143).

Subtracting 12100001022 from its reverse (22010000121), we obtain a palindrome (9909999099).

The spelling of 12100001022 in words is "twelve billion, one hundred million, one thousand, twenty-two".