2122786310400 has 1620 divisors, whose sum is σ = 9198865721892. Its totient is φ = 481579499520.

The previous prime is 2122786310311. The next prime is 2122786310443. The reversal of 2122786310400 is 40136872212.

It is a happy number.

2122786310400 is a `hidden beast` number, since 2 + 1 + 227 + 86 + 310 + 40 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 486556471296 + 1636229839104 = 697536^2 + 1279152^2 .

It is a tau number, because it is divible by the number of its divisors (1620).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 4902508584 + ... + 4902509016.

Almost surely, 2^{2122786310400} is an apocalyptic number.

2122786310400 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 2122786310400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4599432860946).

2122786310400 is an abundant number, since it is smaller than the sum of its proper divisors (7076079411492).

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

2122786310400 is a wasteful number, since it uses less digits than its factorization.

2122786310400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 2122786310400 in words is "two trillion, one hundred twenty-two billion, seven hundred eighty-six million, three hundred ten thousand, four hundred".