12012221020100 has 72 divisors (see below), whose sum is σ = 29803983464640. Its totient is φ = 4116585179520.

The previous prime is 12012221020091. The next prime is 12012221020103. The reversal of 12012221020100 is 102012221021.

12012221020100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (12012221020103) 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, 2412359 + ... + 5462958.

Almost surely, 2^{12012221020100} is an apocalyptic number.

12012221020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012221020100 is an abundant number, since it is smaller than the sum of its proper divisors (17791762444540).

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

12012221020100 is a wasteful number, since it uses less digits than its factorization.

12012221020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877517 (or 7877510 counting only the distinct ones).

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

Adding to 12012221020100 its reverse (102012221021), we get a palindrome (12114233241121).

The spelling of 12012221020100 in words is "twelve trillion, twelve billion, two hundred twenty-one million, twenty thousand, one hundred".