2112887700 has 288 divisors, whose sum is σ = 8469457920. Its totient is φ = 438998400.

The previous prime is 2112887671. The next prime is 2112887731. The reversal of 2112887700 is 77882112.

It is a happy number.

It is a super-2 number, since 2×2112887700² = 8928588865622580000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 95 ways as a sum of consecutive naturals, for example, 202819 + ... + 212981.

It is an arithmetic number, because the mean of its divisors is an integer number (29407840).

Almost surely, 2^2112887700 is an apocalyptic number.

2112887700 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 2112887700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4234728960).

2112887700 is an abundant number, since it is smaller than the sum of its proper divisors (6356570220).

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

2112887700 is a wasteful number, since it uses less digits than its factorization.

2112887700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10204 (or 10191 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 2112887700 is about 45966.1582036176. The cubic root of 2112887700 is about 1283.1934623894.

The spelling of 2112887700 in words is "two billion, one hundred twelve million, eight hundred eighty-seven thousand, seven hundred".