2203855202172 has 48 divisors (see below), whose sum is σ = 5537991109280. Its totient is φ = 678097225728.

The previous prime is 2203855202141. The next prime is 2203855202179. The reversal of 2203855202172 is 2712025583022.

It is a happy number.

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 2203855202172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203855202179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13144404 + ... + 13311012.

Almost surely, 2^{2203855202172} is an apocalyptic number.

It is an amenable number.

2203855202172 is an abundant number, since it is smaller than the sum of its proper divisors (3334135907108).

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

2203855202172 is a wasteful number, since it uses less digits than its factorization.

2203855202172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251422 (or 251420 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 2203855202172 in words is "two trillion, two hundred three billion, eight hundred fifty-five million, two hundred two thousand, one hundred seventy-two".