2111572000 has 96 divisors (see below), whose sum is σ = 5266235520. Its totient is φ = 831916800.

The previous prime is 2111571991. The next prime is 2111572007. The reversal of 2111572000 is 2751112.

It is a super-2 number, since 2×2111572000² = 8917472622368000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111572007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264061 + ... + 271939.

It is an arithmetic number, because the mean of its divisors is an integer number (54856620).

Almost surely, 2^2111572000 is an apocalyptic number.

2111572000 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 2111572000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633117760).

2111572000 is an abundant number, since it is smaller than the sum of its proper divisors (3154663520).

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

2111572000 is an equidigital number, since it uses as much as digits as its factorization.

2111572000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971 (or 7953 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 2111572000 is about 45951.8443590679. The cubic root of 2111572000 is about 1282.9270579176.

The spelling of 2111572000 in words is "two billion, one hundred eleven million, five hundred seventy-two thousand".