12111222012100 has 18 divisors (see below), whose sum is σ = 26281351766474. Its totient is φ = 4844488804800.

The previous prime is 12111222012031. The next prime is 12111222012119. The reversal of 12111222012100 is 121022211121.

12111222012100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6222369924 + 12104999642176 = 78882^2 + 3479224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60556109961 + ... + 60556110160.

Almost surely, 2^{12111222012100} is an apocalyptic number.

12111222012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111222012100 is an abundant number, since it is smaller than the sum of its proper divisors (14170129754374).

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

12111222012100 is a wasteful number, since it uses less digits than its factorization.

12111222012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121112220135 (or 121112220128 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111222012100 its reverse (121022211121), we get a palindrome (12232244223221).

The spelling of 12111222012100 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred".