2101254000 has 160 divisors (see below), whose sum is σ = 6876869376. Its totient is φ = 551865600.

The previous prime is 2101253993. The next prime is 2101254019. The reversal of 2101254000 is 4521012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 399387 + ... + 404613.

Almost surely, 2^2101254000 is an apocalyptic number.

2101254000 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 2101254000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3438434688).

2101254000 is an abundant number, since it is smaller than the sum of its proper divisors (4775615376).

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

2101254000 is a wasteful number, since it uses less digits than its factorization.

2101254000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320 (or 5304 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2101254000 is about 45839.4371693196. The cubic root of 2101254000 is about 1280.8340105016.

Adding to 2101254000 its reverse (4521012), we get a palindrome (2105775012).

The spelling of 2101254000 in words is "two billion, one hundred one million, two hundred fifty-four thousand".