12212201020100 has 36 divisors (see below), whose sum is σ = 26504275990164. Its totient is φ = 4884179988480.

The previous prime is 12212201020057. The next prime is 12212201020157. The reversal of 12212201020100 is 102010221221.

It can be written as a sum of positive squares in 6 ways, for example, as 3644555901184 + 8567645118916 = 1909072^2 + 2927054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8054057 + ... + 9449456.

Almost surely, 2^{12212201020100} is an apocalyptic number.

12212201020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212201020100 is an abundant number, since it is smaller than the sum of its proper divisors (14292074970064).

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

12212201020100 is a wasteful number, since it uses less digits than its factorization.

12212201020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17510504 (or 17510497 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212201020100 its reverse (102010221221), we get a palindrome (12314211241321).

The spelling of 12212201020100 in words is "twelve trillion, two hundred twelve billion, two hundred one million, twenty thousand, one hundred".