12012221122100 has 36 divisors (see below), whose sum is σ = 26069404305504. Its totient is φ = 4804356749280.

The previous prime is 12012221122049. The next prime is 12012221122103. The reversal of 12012221122100 is 122112221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012221122103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5737424 + ... + 7546023.

Almost surely, 2^{12012221122100} is an apocalyptic number.

12012221122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012221122100 is an abundant number, since it is smaller than the sum of its proper divisors (14057183183404).

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

12012221122100 is a wasteful number, since it uses less digits than its factorization.

12012221122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13292504 (or 13292497 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12012221122100 its reverse (122112221021), we get a palindrome (12134333343121).

The spelling of 12012221122100 in words is "twelve trillion, twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred".