2101851312 has 160 divisors (see below), whose sum is σ = 6038613504. Its totient is φ = 629896960.

The previous prime is 2101851289. The next prime is 2101851313. The reversal of 2101851312 is 2131581012.

It is a super-2 number, since 2×2101851312² = 8835557875512242688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2101851313) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10669198 + ... + 10669394.

Almost surely, 2^2101851312 is an apocalyptic number.

2101851312 is a gapful number since it is divisible by the number (22) 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 2101851312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3019306752).

2101851312 is an abundant number, since it is smaller than the sum of its proper divisors (3936762192).

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

2101851312 is a wasteful number, since it uses less digits than its factorization.

2101851312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 2101851312 is about 45845.9519696123. The cubic root of 2101851312 is about 1280.9553642334.

The spelling of 2101851312 in words is "two billion, one hundred one million, eight hundred fifty-one thousand, three hundred twelve".