12103021211112 has 320 divisors, whose sum is σ = 36967544570880. Its totient is φ = 3677111520768.

The previous prime is 12103021211107. The next prime is 12103021211117. The reversal of 12103021211112 is 21111212030121.

It is a happy number.

12103021211112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12103021211107) and next prime (12103021211117).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12103021211117) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1703927353 + ... + 1703934455.

It is an arithmetic number, because the mean of its divisors is an integer number (115523576784).

Almost surely, 2^{12103021211112} is an apocalyptic number.

12103021211112 is a gapful number since it is divisible by the number (12) 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 12103021211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18483772285440).

12103021211112 is an abundant number, since it is smaller than the sum of its proper divisors (24864523359768).

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

12103021211112 is a wasteful number, since it uses less digits than its factorization.

12103021211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9654 (or 9641 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12103021211112 its reverse (21111212030121), we get a palindrome (33214233241233).

The spelling of 12103021211112 in words is "twelve trillion, one hundred three billion, twenty-one million, two hundred eleven thousand, one hundred twelve".