2112255169920 has 1280 divisors, whose sum is σ = 8856097873920. Its totient is φ = 469755002880.

The previous prime is 2112255169909. The next prime is 2112255169949. The reversal of 2112255169920 is 299615522112.

2112255169920 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 551 + 6 + 9 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4622002332 + ... + 4622002788.

It is an arithmetic number, because the mean of its divisors is an integer number (6918826464).

Almost surely, 2^{2112255169920} is an apocalyptic number.

2112255169920 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 2112255169920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4428048936960).

2112255169920 is an abundant number, since it is smaller than the sum of its proper divisors (6743842704000).

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

2112255169920 is a wasteful number, since it uses less digits than its factorization.

2112255169920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 2112255169920 in words is "two trillion, one hundred twelve billion, two hundred fifty-five million, one hundred sixty-nine thousand, nine hundred twenty".