12011111102100 has 576 divisors, whose sum is σ = 39756035450880. Its totient is φ = 2773075200000.

The previous prime is 12011111102093. The next prime is 12011111102101. The reversal of 12011111102100 is 120111111021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011111102101) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2735390905 + ... + 2735395295.

It is an arithmetic number, because the mean of its divisors is an integer number (69020894880).

Almost surely, 2^{12011111102100} is an apocalyptic number.

12011111102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011111102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19878017725440).

12011111102100 is an abundant number, since it is smaller than the sum of its proper divisors (27744924348780).

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

12011111102100 is a wasteful number, since it uses less digits than its factorization.

12011111102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832 (or 4825 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12011111102100 its reverse (120111111021), we get a palindrome (12131222213121).

12011111102100 divided by its reverse (120111111021) gives a square (100 = 10²).

It can be divided in two parts, 120111 and 11102100, that added together give a palindrome (11222211).

The spelling of 12011111102100 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred two thousand, one hundred".