12200121100 has 36 divisors (see below), whose sum is σ = 26480211408. Its totient is φ = 4878952000.

The previous prime is 12200121091. The next prime is 12200121133. The reversal of 12200121100 is 112100221.

12200121100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548190 + ... + 570010.

It is an arithmetic number, because the mean of its divisors is an integer number (735561428).

Almost surely, 2^12200121100 is an apocalyptic number.

12200121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200121100 is an abundant number, since it is smaller than the sum of its proper divisors (14280090308).

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

12200121100 is a wasteful number, since it uses less digits than its factorization.

12200121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27426 (or 27419 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12200121100 its reverse (112100221), we get a palindrome (12312221321).

It can be divided in two parts, 12200121 and 100, that added together give a palindrome (12200221).

The spelling of 12200121100 in words is "twelve billion, two hundred million, one hundred twenty-one thousand, one hundred".