12201211002100 has 36 divisors (see below), whose sum is σ = 26476842910924. Its totient is φ = 4880444762880.

The previous prime is 12201211002061. The next prime is 12201211002103. The reversal of 12201211002100 is 120011210221.

It can be written as a sum of positive squares in 6 ways, for example, as 19966255204 + 12181244746896 = 141302^2 + 3490164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201211002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13983862 + ... + 14830738.

Almost surely, 2^{12201211002100} is an apocalyptic number.

12201211002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201211002100 is an abundant number, since it is smaller than the sum of its proper divisors (14275631908824).

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

12201211002100 is a wasteful number, since it uses less digits than its factorization.

12201211002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990964 (or 990957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12201211002100 its reverse (120011210221), we get a palindrome (12321222212321).

The spelling of 12201211002100 in words is "twelve trillion, two hundred one billion, two hundred eleven million, two thousand, one hundred".