12201222102100 has 18 divisors (see below), whose sum is σ = 26476651961774. Its totient is φ = 4880488840800.

The previous prime is 12201222102071. The next prime is 12201222102143. The reversal of 12201222102100 is 120122210221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3721732036 + 12197500370064 = 61006^2 + 3492492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61006110411 + ... + 61006110610.

Almost surely, 2^{12201222102100} is an apocalyptic number.

12201222102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201222102100 is an abundant number, since it is smaller than the sum of its proper divisors (14275429859674).

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

12201222102100 is a wasteful number, since it uses less digits than its factorization.

12201222102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122012221035 (or 122012221028 counting only the distinct ones).

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

Adding to 12201222102100 its reverse (120122210221), we get a palindrome (12321344312321).

The spelling of 12201222102100 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, one hundred two thousand, one hundred".