12221012010100 has 36 divisors (see below), whose sum is σ = 26545775547564. Its totient is φ = 4883579092480.

The previous prime is 12221012010091. The next prime is 12221012010149. The reversal of 12221012010100 is 101021012221.

It can be written as a sum of positive squares in 6 ways, for example, as 2178983395044 + 10042028615056 = 1476138^2 + 3168916^2 .

It is a congruent number.

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, 60219589 + ... + 60422188.

It is an arithmetic number, because the mean of its divisors is an integer number (737382654099).

Almost surely, 2^{12221012010100} is an apocalyptic number.

12221012010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221012010100 is an abundant number, since it is smaller than the sum of its proper divisors (14324763537464).

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

12221012010100 is a wasteful number, since it uses less digits than its factorization.

12221012010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120642804 (or 120642797 counting only the distinct ones).

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

Adding to 12221012010100 its reverse (101021012221), we get a palindrome (12322033022321).

The spelling of 12221012010100 in words is "twelve trillion, two hundred twenty-one billion, twelve million, ten thousand, one hundred".