2101255040 has 32 divisors (see below), whose sum is σ = 5023314360. Its totient is φ = 840501760.

The previous prime is 2101255019. The next prime is 2101255103. The reversal of 2101255040 is 405521012.

It is a tau number, because it is divible by the number of its divisors (32).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640966 + ... + 1642245.

Almost surely, 2^2101255040 is an apocalyptic number.

2101255040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101255040 is an abundant number, since it is smaller than the sum of its proper divisors (2922059320).

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

2101255040 is an equidigital number, since it uses as much as digits as its factorization.

2101255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283230 (or 3283218 counting only the distinct ones).

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

The square root of 2101255040 is about 45839.4485132620. The cubic root of 2101255040 is about 1280.8342218147.

Adding to 2101255040 its reverse (405521012), we get a palindrome (2506776052).

The spelling of 2101255040 in words is "two billion, one hundred one million, two hundred fifty-five thousand, forty".