12215444115100 has 36 divisors (see below), whose sum is σ = 27123967546984. Its totient is φ = 4772545606080.

The previous prime is 12215444115071. The next prime is 12215444115101. The reversal of 12215444115100 is 151144451221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215444115101) 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, 1420396179 + ... + 1420404778.

Almost surely, 2^{12215444115100} is an apocalyptic number.

12215444115100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12215444115100 is an abundant number, since it is smaller than the sum of its proper divisors (14908523431884).

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

12215444115100 is a wasteful number, since it uses less digits than its factorization.

12215444115100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840801014 (or 2840801007 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

Adding to 12215444115100 its reverse (151144451221), we get a palindrome (12366588566321).

The spelling of 12215444115100 in words is "twelve trillion, two hundred fifteen billion, four hundred forty-four million, one hundred fifteen thousand, one hundred".