12212113231100 has 36 divisors (see below), whose sum is σ = 26521848456600. Its totient is φ = 4880870592960.

The previous prime is 12212113231063. The next prime is 12212113231117. The reversal of 12212113231100 is 113231121221.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 49560230 + ... + 49806029.

Almost surely, 2^{12212113231100} is an apocalyptic number.

12212113231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212113231100 is an abundant number, since it is smaller than the sum of its proper divisors (14309735225500).

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

12212113231100 is a wasteful number, since it uses less digits than its factorization.

12212113231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99367502 (or 99367495 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12212113231100 its reverse (113231121221), we get a palindrome (12325344352321).

The spelling of 12212113231100 in words is "twelve trillion, two hundred twelve billion, one hundred thirteen million, two hundred thirty-one thousand, one hundred".