2103822542172 has 48 divisors (see below), whose sum is σ = 5286799953792. Its totient is φ = 647296766400.

The previous prime is 2103822542117. The next prime is 2103822542221. The reversal of 2103822542172 is 2712452283012.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 2103822542172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791663 + ... + 3464249.

It is an arithmetic number, because the mean of its divisors is an integer number (110141665704).

Almost surely, 2^{2103822542172} is an apocalyptic number.

It is an amenable number.

2103822542172 is an abundant number, since it is smaller than the sum of its proper divisors (3182977411620).

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

2103822542172 is a wasteful number, since it uses less digits than its factorization.

2103822542172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692658 (or 692656 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 2103822542172 in words is "two trillion, one hundred three billion, eight hundred twenty-two million, five hundred forty-two thousand, one hundred seventy-two".