2115205220000 has 60 divisors (see below), whose sum is σ = 5203722171186. Its totient is φ = 846082080000.

The previous prime is 2115205219969. The next prime is 2115205220077. The reversal of 2115205220000 is 225025112.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 203390176144 + 1911815043856 = 450988^2 + 1382684^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52860131 + ... + 52900130.

Almost surely, 2^{2115205220000} is an apocalyptic number.

2115205220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115205220000 is an abundant number, since it is smaller than the sum of its proper divisors (3088516951186).

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

2115205220000 is an equidigital number, since it uses as much as digits as its factorization.

2115205220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105760291 (or 105760268 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 2115205220000 in words is "two trillion, one hundred fifteen billion, two hundred five million, two hundred twenty thousand".