12102121220200 has 96 divisors (see below), whose sum is σ = 31065204512160. Its totient is φ = 4347749945600.

The previous prime is 12102121220011. The next prime is 12102121220209. The reversal of 12102121220200 is 202212120121.

It is a happy number.

It is a super-2 number, since 2×12102121220200² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102121220209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32955739 + ... + 33320938.

It is an arithmetic number, because the mean of its divisors is an integer number (323595880335).

Almost surely, 2^{12102121220200} is an apocalyptic number.

12102121220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102121220200 is an abundant number, since it is smaller than the sum of its proper divisors (18963083291960).

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

12102121220200 is a wasteful number, since it uses less digits than its factorization.

12102121220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66276787 (or 66276778 counting only the distinct ones).

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

Adding to 12102121220200 its reverse (202212120121), we get a palindrome (12304333340321).

It can be divided in two parts, 12102121 and 220200, that added together give a palindrome (12322321).

The spelling of 12102121220200 in words is "twelve trillion, one hundred two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred".