2103111302100 has 144 divisors (see below), whose sum is σ = 6111185317440. Its totient is φ = 558419558400.

The previous prime is 2103111302057. The next prime is 2103111302183. The reversal of 2103111302100 is 12031113012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2103111302100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119615310 + ... + 119632890.

Almost surely, 2^{2103111302100} is an apocalyptic number.

2103111302100 is a gapful number since it is divisible by the number (20) 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 2103111302100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3055592658720).

2103111302100 is an abundant number, since it is smaller than the sum of its proper divisors (4008074015340).

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

2103111302100 is a wasteful number, since it uses less digits than its factorization.

2103111302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19290 (or 19283 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2103111302100 its reverse (12031113012), we get a palindrome (2115142415112).

The spelling of 2103111302100 in words is "two trillion, one hundred three billion, one hundred eleven million, three hundred two thousand, one hundred".