2120840647200 has 288 divisors, whose sum is σ = 8367681309120. Its totient is φ = 514143129600.

The previous prime is 2120840647199. The next prime is 2120840647207. The reversal of 2120840647200 is 27460480212.

2120840647200 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 8 + 4 + 0 + 647 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is not an unprimeable number, because it can be changed into a prime (2120840647207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4225449 + ... + 4700648.

It is an arithmetic number, because the mean of its divisors is an integer number (29054448990).

Almost surely, 2^{2120840647200} is an apocalyptic number.

2120840647200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120840647200 is an abundant number, since it is smaller than the sum of its proper divisors (6246840661920).

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

2120840647200 is a wasteful number, since it uses less digits than its factorization.

2120840647200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8926137 (or 8926118 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 2120840647200 in words is "two trillion, one hundred twenty billion, eight hundred forty million, six hundred forty-seven thousand, two hundred".